Add comprehensive documentation for adrenal conditions

- Created detailed articles for Adrenal Adenoma, Adrenal Cyst, Adrenal Myelolipoma, and general Adrenal anatomy.
- Included key facts, imaging findings, differential diagnoses, pathology, clinical issues, and diagnostic checklists for each condition.
- Enhanced understanding of adrenal tumors and their characteristics through structured documentation.
This commit is contained in:
Ross
2025-10-17 22:27:59 +01:00
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---
title: "Adrenal Adenoma"
docid: "e2916d86-5f9f-4dd3-9576-1a7b89d8dda0"
breadcrumbs:
- "Genitourinary"
- "Diagnosis"
- "Adrenal"
- "Benign Neoplasms"
- "Adrenal Adenoma"
---
# KEY FACTS
- ## Imaging
- Well-circumscribed, uniform, low-attenuation, small adrenal mass
- Low attenuation due to abundant intracytoplasmic lipid
- Imaging features of typical lipid-rich adenomas
- NECT: < 10 HU (71% sensitivity, 98% specificity)
- MR: Significant decrease in signal on out-of-phase T1WI due to intravoxel lipid and water
- May show focal areas of heterogeneous attenuation or absence of signal loss due to degeneration, hemorrhage, and fibrin deposition
- Clinical context key to differentiate from collision tumor: Unlikely in absence of extraadrenal malignancy
- Lipid-poor adenomas (10-40% cases): Utilize relative or absolute CT contrast washout kinetics for diagnosis
- Accounts for vast majority of adrenal "incidentalomas"
- Imaging intensive algorithm suggested for incidental adrenal lesions, though overwhelming majority are benign and hormonally inactive
- Primary hyperaldosteronism (Conn syndrome): 80% due to unilateral, typically small (< 2 cm) adenoma
- Cushing syndrome: 80-85% due to adrenal hyperplasia
- Typically shows FDG uptake < that of liver on PET/CT
- ## Top Differential Diagnoses
- Adrenal metastases and lymphoma
- Adrenal (macronodular) hyperplasia
- Pheochromocytoma
- Adrenal carcinoma
- Adrenal myelolipoma
- Gastric diverticulum
- Adrenal cyst
- ## Diagnostic Checklist
- Asymptomatic mass: Usually nonfunctioning adenoma, even in patients with known cancer
- NECT and MR are equally accurate for diagnosis of lipid-rich adenoma
- Utilize dedicated CECT adrenal protocol with 15-minute delayed imaging for diagnosis of potential lipid-poor adenomas
# TERMINOLOGY
- ## Definitions
- Benign adrenal cortical tumor
# IMAGING
- ## General Features
- ### Best diagnostic clue
- Imaging strategies target typical adenoma histology: Abundant intracytoplasmic lipid
- Low attenuation (< 10 HU) on NECT
- Significant loss of signal on out-of-phase T1WI MR (intravoxel fat and water)
- ### Size
- Cushing syndrome adenoma: 2-5 cm
- Conn syndrome adenoma: Classically < 2 cm (20% < 1 cm)
- Vast majority of incidental, hormonally inactive adrenal adenomas are small (< 2 cm)
- ### Morphology
- Usually round to oval suprarenal mass
- Key concepts
- Most common adrenal cortex tumor (10% bilateral)
- Accounts for > 90% of all "incidentalomas"
- May occur in up to 9% of general population, diagnosed on 5% of CT exams with various indications
- Lipid-rich adrenal adenoma: 60-90% of adenomas
- Lipid-poor adrenal adenoma: 10-40% of adenomas
- Increased incidence in patients with diabetes and hypertension
- NECT (or chemical shift MR): Study of choice to diagnose incidental adrenal masses
- Classified into 2 types based on function
- Nonhyperfunctioning: Normal hormone levels
- Hyperfunctioning: Primary hyperaldosteronism, Cushing syndrome, hyperandrogenism
- **Cushing syndrome**
- 15-25% of cases are due to autonomous adrenal adenoma
- 80-85% of cases are due to**adrenal hyperplasia**
- Adenomas usually > 2 cm
- **Primary hyperaldosteronism (Conn syndrome)**
- 80% of cases are due to****adrenal adenoma
- 20% of cases are due to adrenal hyperplasia
- Adenomas are often small (< 2 cm)
- ## CT Findings
- ### NECT
- Smooth, well defined, round or oval in shape
- Homogeneous soft tissue mass of 0-20 HU
- **Lipid-rich adrenal adenoma** (60-90% of cases)
- Uniform low attenuation
- Metaanalysis of < 10 HU threshold: 71% sensitivity, 98% specificity
- Sensitivity may increase to almost 90% with histogram analysis (identify negative pixels), though variable results and scanner dependent
- **Lipid-poor adrenal adenoma** (10-40% of cases)
- Attenuation varies from 10-30 HU
- Difficult to differentiate from metastases on NECT
- Cushing syndrome due to adrenal adenoma
- Remainder of ipsilateral gland and contralateral adrenal gland may be atrophic due to ↓ ACTH levels
- ↑ cortisol: Feedback inhibition on pituitary ACTH
- ACTH-independent macronodular hyperplasia: Multiple, bilateral, functioning adrenal adenomas
- Conn syndrome due to adrenal adenoma
- Remainder of ipsilateral gland and contralateral adrenal gland appear normal
- Large adenomas
- More heterogeneous than small adenomas
- ± hemorrhage, cystic degeneration, calcification
- Growth should raise suspicion for malignancy
- ### CECT
- Enhancing adrenal mass that deenhances rapidly
- Dedicated adrenal CT exam incorporates initial dynamic enhanced phase (~ 70-second delay) and 15-minute delay
- Relative percentage washout = dynamic enhanced (HU) - delayed (HU) / dynamic enhanced HU
- Relative percentage washout > 40%: 96% sensitivity, 100% specificity
- Absolute percentage washout (if NECT available) = dynamic enhanced (HU) - delayed (HU) / dynamic enhanced (HU) - unenhanced (HU)
- Absolute percentage washout > 60%: 86-88% sensitivity, 92-96% specificity
- 10-minute delay utilized by some centers, but shorter delay may decrease sensitivity
- Adrenal washout calculators readily available online
- Utilize technique for indeterminate, potentially lipid-poor adenomas
- Clinical context critical: Rapid washout can be seen with pheochromocytomas, renal cell, hepatocellular carcinoma, and hypervascular metastases
- Dual-energy CT and iodine subtraction techniques can generate virtual noncontrast (VNC) images
- May identify lipid-rich adenomas and obviate need for additional imaging
- Iodine:VNC ratio ≥ 6.7 has sensitivity and specificity of 95% for adenoma (higher ratios in adenoma compared to metastasis)
- ## MR Findings
- T1WI and T2WI
- Low to intermediate signal
- Chemical shift (in- and out-of-phase) imaging
- Mainstay of MR diagnosis
- Sensitivity and specificity equivalent to NECT
- Signal loss on out-of-phase T1WI due to intravoxel water and fat protons
- Inverse relationship between percentage of lipid-rich cells and relative ↓ signal on out-of-phase imaging
- May not identify lipid-poor adenomas
- Visual inspection of signal in phase (SIP) and out of phase (SOP), though quantitative analysis may be helpful
- Adrenal to spleen chemical shift imaging (CSI) ratio: Lesion:spleen SOP/adrenal/spleen SIP
- < .71 = adenoma
- Adrenal signal intensity index: 100 x (SIP - SOP) / SIP
- > 16.5% = adenoma
- Beware technical pitfalls
- Sampling of 1st echo pair at 3T is challenging
- India ink artifact mimics signal loss, particularly in small adrenal lesions
- Other primary or secondary adrenal lesions may contain lipid
- Adenomas and metastases may coexist in same gland (collision tumor)
- T1 C+ MR
- Rapid, uniform enhancement and deenhancement
- Ancillary MR techniques
- Diffusion MR: Not specific (ADC overlap between adenomas and metastases)
- MR spectroscopy: Choline:creatinine and choline:lipid ratio discriminatory threshold ratios may aid in adrenal lesion characterization, though larger studies needed
- ## Ultrasonographic Findings
- ### Grayscale ultrasound
- Nonspecific, solid suprarenal mass
- Right suprarenal mass seen more clearly left due to acoustic window provided by liver
- ## Angiographic Findings
- Conventional
- Adrenal arteriography
- Catheterization of renal or inferior adrenal arteries shows vascular supply of adrenal tumors
- Adenomas are usually hypo- to moderately vascular
- No arterial encasement or venous laking or puddling, which are malignant vascular features
- Adrenal venography
- Most commonly to obtain adrenal vein samples
- Advocated for patients with primary hyperaldosteronism triaged to adrenalectomy
- Technically difficult study but may confirm laterality of small, aldosterone-secreting adenoma
- Technical approach and criteria for positive study varies; ACTH stimulation may increase accuracy
- Adrenal adenoma is seen as filling defect within adrenal gland displacing adjacent vessels
- Circumferential vein frequently seen around adrenal adenoma
- ## Nuclear Medicine Findings
- PET/CT
- Utilized as part of malignancy staging
- Markedly increased F-18 FDG uptake characteristic of metastases
- Adenomas may also accumulate F-18 FDG, typically less intense than liver
- Potential false-negatives: Metastases from primary carcinomas that are non-FDG avid (e.g., neuroendocrine tumors)
- SUV thresholds published but adenomas typically less intense than liver
- Adrenocortical scintigraphy by using NP-59
- NP-59 is cholesterol analog that binds to low-density lipoprotein receptors of adrenal cortex
- NP-59 used and dexamethasone: Accentuate uptake in non-ACTH-dependent adrenal tissues (adenoma)
- Normal NP-59: When both adrenal glands are seen 5 days after injection or thereafter
- Adrenal adenoma: Unilateral early adrenal visualization before day 5 after NP-59 injection
- Adrenal hyperplasia: Bilateral early adrenal visualization before day 5 after NP-59 injection
- ## Imaging Recommendations
- NECT is initial study of choice to confirm diagnosis of lipid-rich adrenal adenoma
- ROI should encompass lesion: Attenuation < 10 HU is diagnostic
- In- and out-of-phase MR equivalent to NECT for lipid-rich lesions
- Signal dropout on out-of-phase T1WI MR: Qualitative assessment typically suffices
- CECT, including 15-minute delayed phase, used for potential lipid-poor adenomas: Calculate either relative or absolute washout
# DIFFERENTIAL DIAGNOSIS
- [Adrenal Metastases and Lymphoma](/document/adrenal-lymphoma/44639c90-bd04-4e2a-a470-2c28a0e2ff78)
- Adrenal metastases
- Unilateral or bilateral masses ± central necrosis, hemorrhage
- Usually known to have malignancy elsewhere
- NECT: Metastases mimic lipid-poor adenoma
- CECT: Hypo- or hypervascular and prolonged washout pattern
- Adrenal lymphoma
- Usually spread to adrenal gland from retroperitoneal tumor
- Unilateral or bilateral masses
- Unilateral primary lymphoma (non-Hodgkin) can mimic adenoma
- Hypovascular; moderate enhancement with contrast
- [Adrenal Myelolipoma](/document/adrenal-myelolipoma/5813a554-06a4-4696-af71-7ce50693039d)
- Small or large, asymptomatic adrenal mass
- Intramural macroscopic fatty elements on imaging
- [Adrenal Hyperplasia](/document/adrenal-hyperplasia/90d09395-41d4-49b4-bb1d-4cb00b8bc272)
- Adrenal glands are often symmetrically enlarged
- Width of adrenal gland limbs > 10 mm (diagnostic)
- No discrete mass or nodule seen as rule
- Dominant macronodule of macronodular hyperplasia mimics small adrenal adenomas
- Cortisol-secreting adenoma: Remainder of ipsilateral and contralateral glands, atrophic (↓ ACTH)
- Macronodular hyperplasia: Both glands are enlarged (due to elevated ACTH levels)
- No obvious enhancement and washout pattern seen
- [Pheochromocytoma](/document/pheochromocytoma/7d3c4062-643c-4030-8783-f85184ad8132)
- Tumor > 3 cm in most cases; classically T2 hyperintense
- Highly vascular tumor prone to hemorrhage, necrosis
- Bilateral adrenal tumors in multiple endocrine neoplasia (MEN) syndromes
- [Unilateral Adrenal Hemorrhage](/document/adrenal-hemorrhage/5812e5c4-ca8a-4af5-884b-f75795bcde0f)
- Chronic hematoma: Well-defined, round, low-density, mass-like lesion simulating adenoma
- [Adrenal Carcinoma](/document/adrenal-cortical-carcinoma/bdc7a08b-a64f-4bd2-9dfc-24331728e85e)
- Rare, unilateral, invasive and enhancing mass
- > 6 cm when initially diagnosed
- [Gastric Diverticulum](/document/gastric-diverticulum/eeb101f0-8bdf-4771-b44a-fe6e73b3a463)
- Abnormal, rounded soft tissue lesion in left suprarenal area; mimics adrenal mass
- Diverticular contents do not enhance, whereas adenomas do
- Distend stomach with gas and fluid; scan in prone position to distend diverticulum
- [Ganglioneuroma](/document/pheochromocytoma/7d3c4062-643c-4030-8783-f85184ad8132)
- Younger patients; mean age: 27 years
- Larger mass; average tumor size: 8 cm
- ## Adrenal Cyst
- Attenuation similar to lipid-rich adenoma
- Lack of enhancement, rim calcification may suggest diagnosis
# PATHOLOGY
- ## General Features
- ### Etiology
- Unknown
- ### Associated abnormalities
- MEN syndromes
- Most adrenals with adenoma have normal function
- Occasionally adenoma causes adrenal hyperfunction
- Normal adrenocortical secretory hormones
- Cortisol, aldosterone, androgens
- ## Gross Pathologic & Surgical Features
- Well-delineated, tan-yellow, ovoid mass
- 3 microscopic patterns
- Pure (fasciculata- or reticularis-type cells), mixed, or hybrid
- May have focal areas of degeneration, hemorrhage, and fibrin deposition
- ## Microscopic Features
- 70% of adenomas: High % of intracytoplasmic lipid
- 30% of adenomas: Low % of intracytoplasmic lipid
# CLINICAL ISSUES
- ## Presentation
- ### Most common signs/symptoms
- Asymptomatic incidental CT finding
- Conn syndrome: Hypertension and weakness
- Cushing syndrome: Moon facies, truncal obesity, purple striae, and buffalo hump
- Virilization in women
- Lab data: ↑ aldosterone, cortisol, &/or androgens
- Diagnosis: Clinical, biochemical, imaging, histology
- ## Demographics
- ### Age
- Prevalence of adenoma increases with age
- Peak at 60-69 years, decreasing thereafter
- ### Epidemiology
- Most common adrenal tumor of all incidentalomas
- ↑ incidence in patients with diabetes or hypertension
- Occurs in up to 9% of population (postmortem data)
- ## Natural History & Prognosis
- Prognosis: Excellent when incidental and nonhyperfunctioning
- ## Treatment
- No treatment when asymptomatic incidental finding
- Laparoscopic removal of gland if hyperfunctioning
# DIAGNOSTIC CHECKLIST
- ## Consider
- Asymptomatic mass: Usually nonhyperfunctioning adenoma, even in patient with known cancer
- ## Image Interpretation Pearls
- Well-defined, low-density (< 10 HU) suprarenal mass
- Enhances with washout pattern > 50% within 15 minutes
- Out-of-phase T1WI MR: Signal dropout, lipid-rich mass
adc00b93-b4c7-4e75-91bd-72023f4cd548
@@ -0,0 +1,256 @@
---
title: "Adrenal Cyst"
docid: "c5d717a3-3d6e-4e86-9efe-1ad0ec14740f"
breadcrumbs:
- "Genitourinary"
- "Diagnosis"
- "Adrenal"
- "Benign Neoplasms"
- "Adrenal Cyst"
---
# KEY FACTS
- ## Imaging
- "Adrenal cyst" is descriptive term, not pathological diagnosis
- True adrenal cysts
- Majority are endothelial cysts (lymphangiomas)
- Epithelial cysts exceedingly rare
- Simple, or minimally complex, adrenal cyst, thin rim calcification, no enhancement
- Pseudocysts
- Prior hemorrhage inferred
- Nonenhancing but complex contents and wall calcification
- Relevant history (extraadrenal malignancy, rapid growth), biochemical evaluation (cortisol, metanephrines): Consider underlying adrenal neoplasm
- Enhancing soft tissue components may suggest adrenal mass hemorrhage and pseudocyst formation
- Parasitic (echinococcal) cyst
- Rare outside endemic areas
- Typically in setting of generalized echinococcus
- ## Top Differential Diagnoses
- Adrenal adenoma
- CECT: Enhancing mass without visible wall or peripheral calcifications
- Gastric diverticulum
- Air-, fluid-, or contrast-filled mass with no enhancement of contents
- Adrenal myelolipoma
- Macroscopic fat
- Necrotic adrenal tumor
- Complex wall with heterogeneous contents
- Retroperitoneal bronchogenic cyst
- ## Clinical Issues
- No treatment required usually
- Imaging surveillance performed, although intensity and length of follow-up not defined
- Biochemical evaluation (cortisol, metanephrines) routinely performed to exclude underlying adrenal neoplasm
- Surgical resection for complex cyst with enhancing components, or symptomatic cyst
- ## Diagnostic Checklist
- Complicated cyst has high attenuation, thick enhancing wall, &/or septations
# TERMINOLOGY
- ## Definitions
- "Adrenal cyst" is descriptive term, not pathological diagnosis
- Can mean true cyst, pseudocyst, or cystic mass
# IMAGING
- ## General Features
- ### Best diagnostic clue
- Well-defined, nonenhancing, water-density adrenal mass ± calcifications
- ### Location
- Suprarenal
- Unilateral > bilateral (8-10% of cases)
- ### Size
- < 5 cm (50%), up to 20 cm
- ## CT Findings
- ### NECT
- Unilocular or multilocular mass
- Well-defined, round to oval, homogeneous mass usually with water (0 HU) or near-water density
- Higher- or mixed-attenuation mass (hemorrhage, intracystic debris, crystals)
- Wall usually very thin
- ↑ wall thickness, up to 3 mm for complex cysts
- Calcifications
- Rim-like or nodular (51-69%)
- Centrally in intracystic septation (19%)
- Punctate within intracystic hemorrhage (5%)
- ### CECT
- No central enhancement ± wall enhancement
- Coronal reformats helpful to determine organ of origin if large cyst
- ## MR Findings
- ### T1WI
- Homogeneous, hypointense mass
- Hyperintense mass (hemorrhage)
- ### T2WI
- Hyperintense mass
- ## Ultrasonographic Findings
- Simple or septated suprarenal cyst
- Shadowing from calcification
- Real-time examination helpful to differentiate adrenal cyst from adjacent (renal, pancreatic) cyst
- ## Imaging Recommendations
- ### Best imaging tool
- CECT or MR; US for confirmation
# DIFFERENTIAL DIAGNOSIS
- [Adrenal Adenoma](/document/adrenal-adenoma/e2916d86-5f9f-4dd3-9576-1a7b89d8dda0)
- NECT: Lipid-rich adenoma (< 10 HU) mimics adrenal cyst
- Peripheral or septal calcification favors adrenal cyst
- CECT: **Enhancing mass** without visible wall or peripheral calcifications
- Assess washout kinetics to diagnose lipid-poor adenoma
- MR: Signal suppression at out-of-phase, chemical-shift imaging
- US: Solid adrenal lesion
- [Gastric Diverticulum](/document/gastric-diverticulum/eeb101f0-8bdf-4771-b44a-fe6e73b3a463)
- May simulate left adrenal cyst
- Air-, fluid-, or contrast-filled suprarenal mass
- No enhancement
- Normal adjacent adrenal gland
- [Adrenal Myelolipoma](/document/adrenal-myelolipoma/5813a554-06a4-4696-af71-7ce50693039d)
- Fat (not fluid) attenuation mass
- ## Necrotic Adrenal Tumor
- Primary (pheochromocytoma or carcinoma) or metastatic
- Clinical history, biochemical evaluation, lesion complexity suggest correct diagnosis
- Enhancing soft tissue components
- ## Retroperitoneal Bronchogenic Cyst
- Rare, benign, suprarenal fluid or soft tissue attenuation lesion
- Adjacent to but separate from adrenal gland
- ## Renal Cyst
- Coronal MR/CT or US useful to determine organ of origin of large, retroperitoneal cystic lesions
# PATHOLOGY
- ## General Features
- ### Etiology
- Congenital (endothelial, epithelial) cysts
- Acquired (post hemorrhagic, inflammatory) pseudocysts
- Cystic, hemorrhagic degeneration of underlying adrenal neoplasm
- ## Staging, Grading, & Classification
- Accepted classification scheme
- Pseudocyst
- Most common type of cystic adrenal lesion in surgical series
- No epithelial or endothelial lining: Fibrous cyst wall
- Potentially as complication of prior trauma or hemorrhage though history of such often not elicited
- May be associated with underlying adrenal neoplasm (pheochromocytoma, adrenal carcinoma, myelolipoma)
- Attenuation and complexity at imaging varies depending upon hemorrhagic component
- Wall and septal calcification common
- Endothelial cyst
- Subtypes: Lymphangiomatous and hemangiomatous
- True cyst: Endothelial lining
- Originate from preexisting vascular malformation or obstructed, ectatic lymphatic channels
- Thin rim calcification typical
- Epithelial cyst
- Extremely rare: No acinar structures within normal adrenal gland
- Mesothelial origin suggested (mesothelial cells potentially incorporated within adrenal gland during embryogenesis)
- Parasitic (hydatid) cyst
# CLINICAL ISSUES
- ## Presentation
- ### Most common signs/symptoms
- Typically asymptomatic
- Larger cysts may be symptomatic
- Abdominal pain
- Hemorrhage
- Clinical history (malignancy, hypertension) elicited
- May indicate cystic degeneration of underlying adrenal neoplasm (e.g., metastasis, pheochromocytoma)
- Diagnosis
- Usually incidental finding at imaging
- Endocrine-biochemical evaluation performed to exclude underlying functional adrenal tumor
- ## Demographics
- ### Age
- Any, though patients 20-50 years of age most common
- ### Sex
- M:F = 1:3
- ### Epidemiology
- Uncommon entity: Autopsy incidence 0.064-0.18%
- Accounts for 1% of incidental adrenal lesions in large imaging series
- ## Natural History & Prognosis
- Complications
- Hypertension, infection, rupture, hemorrhage
- Excellent prognosis for vast majority of incidental, benign adrenal cysts
- Prognosis for pseudocysts secondary to adrenal neoplasm depends upon tumor histology
- ## Treatment
- No treatment required usually
- Imaging follow-up typically performed
- Intensity and length of surveillance not defined
- Cysts may enlarge over time
- Endocrine evaluation (cortisol, metanephrine, etc.) performed
- Surgical resection if symptomatic, underlying adrenal neoplasm
- Laparoscopic resection preferred
# DIAGNOSTIC CHECKLIST
- ## Consider
- Complicated cyst may suggest underlying adrenal neoplasm
- Clinical history, biochemical evaluation, and prior imaging helpful
- ## Image Interpretation Pearls
- Simple adrenal cyst: Scant septation, no enhancement, thin rim calcification
- Likely benign endothelial cyst or pseudocyst
- Coronal imaging helpful to determine organ of origin (and exclude exophytic renal or pancreatic cyst)
- Complicated cyst: High attenuation, thick enhancing wall, &/or septations
- Complexity may suggest underlying adrenal neoplasm and secondary pseudocyst
35fa0290-3451-422f-8726-c69b68aadbb5
@@ -0,0 +1,234 @@
---
title: "Adrenal Myelolipoma"
docid: "5813a554-06a4-4696-af71-7ce50693039d"
breadcrumbs:
- "Genitourinary"
- "Diagnosis"
- "Adrenal"
- "Benign Neoplasms"
- "Adrenal Myelolipoma"
---
# KEY FACTS
- ## Terminology
- Uncommon benign tumor composed of mature fat tissue and hematopoietic elements (myeloid and erythroid cells)
- ## Imaging
- Benign, nonfunctioning adrenal tumor
- Accounts for 7-15% of incidental adrenal masses, usually in older population
- Typically unilateral and very rarely bilateral
- Large tumors can mimic retroperitoneal lipomas, liposarcomas
- Asymptomatic, though larger tumors may hemorrhage
- CT
- Lesion containing fat attenuation (-30 to -90 HU)
- Usually well-defined mass with recognizable pseudocapsule (remaining adrenal)
- Punctate calcifications seen in 24% of cases
- Coronal reconstruction helpful to differentiate from exophytic renal angiomyolipoma
- MR
- Tumor with major fat component
- T1WI in phase: Typically hyperintense
- FS sequences: Loss of signal
- ## Top Differential Diagnoses
- Adrenal adenoma
- Intracellular lipid vs. macroscopic fat
- Adrenal metastases and lymphoma
- Retroperitoneal liposarcoma
- Involving perirenal space, may simulate adrenal (or renal) fatty tumor
- Pheochromocytoma
- Highly vascular, prone to hemorrhage and necrosis
- Adrenal carcinoma
- Renal angiomyelolipoma
- Coronal CT reconstruction or MR useful to determine organ of origin
# TERMINOLOGY
- ## Definitions
- Uncommon benign tumor composed of mature adipose tissue and hematopoietic elements
# IMAGING
- ## General Features
- ### Best diagnostic clue
- Suprarenal mass containing fat
- ### Location
- Suprarenal
- Rare extraadrenal myelolipomas (presacral, retroperitoneal)
- ### Size
- Usually 2-10 cm, rarely 10-20 cm
- Key concepts
- Benign neoplasm of adrenal gland
- Autopsy prevalence rate of 0.2-0.4%
- Accounts for 7-15% of adrenal "incidentalomas"
- Usually unilateral incidental finding in older patient
- Larger tumors can bleed spontaneously
- Most are nonfunctioning (do not secrete hormones)
- Large myelolipomas can mimic retroperitoneal lipoma or liposarcoma
- ## CT Findings
- CT appearance depends on histologic composition
- Most tumors are heterogeneous adrenal masses composed of varying percentages of fat
- Low-attenuation suprarenal lesion containing fat density (-30 to -90 HU)
- Average NECT attenuation value of tumor: -74 HU in one series
- Interspersed soft tissue attenuation components: Myeloid elements, hemorrhage
- Presence of macroscopic fat within tumor is diagnostic
- Punctate calcifications seen in 24% of cases
- Usually well-defined mass with recognizable pseudocapsule (remnant adrenal)
- Coronal reconstructions may help determine organ of origin: Adrenal myelolipoma vs. exophytic renal angiomyelolipoma
- ## MR Findings
- MR appearance depends on histologic composition
- Tumor with major fat component
- T1WI in phase: Typically hyperintense
- T1WI out phase: Persistent hyperintensity of macroscopic fat
- T1WI FS: Confirmatory suppression of signal
- Bone marrow elements (myeloid and erythroid cells)
- Low signal on T1WI, moderate signal on T2WI
- Hemorrhage: Varying T1, T2 signal depending on age of blood
- ## Ultrasonographic Findings
- ### Grayscale ultrasound
- Well-defined, echogenic mass (↑ fat tissue)
- Often overlooked: Lack of mass effect and isoechogenicity relative to retroperitoneal fat
- Heterogeneous mass (↑ myeloid cells)
- ## Angiographic Findings
- Conventional
- Differentiate myelolipoma from retroperitoneal liposarcoma by determining origin of blood supply and vascularity of tumors
- ## Nuclear Medicine Findings
- Typically not metabolically active, though uptake reported at FDG PET
- ## Imaging Recommendations
- Helical NECT or MR with FS sequence
# DIFFERENTIAL DIAGNOSIS
- [Adrenal Adenoma](/document/adrenal-adenoma/e2916d86-5f9f-4dd3-9576-1a7b89d8dda0)
- Lipid-rich adenoma: ↓ attenuation (< 10 HU) at NECT
- Can contain small amounts of macroscopic fat due to lipomatous metaplasia
- CECT: Washout 15 minutes post injection: > 50%
- Relative washout: > 40%
- Absolute washout: > 60%
- [Metastases and Lymphoma, Adrenal](/document/adrenal-lymphoma/44639c90-bd04-4e2a-a470-2c28a0e2ff78)
- Bilateral lesions: Clinical history paramount
- Metastases: Soft tissue attenuation (signal)
- Lymphoma: May maintain adreniform shape, adjacent retroperitoneal adenopathy
- [Liposarcoma, Retroperitoneal](/document/retroperitoneal-sarcoma/c1466b30-b730-41c4-a065-2c2de018a5f7)
- Retroperitoneal primary sarcoma involving perirenal space may simulate adrenal (or renal) fatty tumor
- [Pheochromocytoma](/document/pheochromocytoma/7d3c4062-643c-4030-8783-f85184ad8132)
- Highly vascular, prone to hemorrhage and necrosis
- Hyperintense on T2WI, bilateral in multiple endocrine neoplasia syndromes (MEN) syndromes
- Clinical history (labile hypertension) and urinary catecholamines
- [Adrenal Carcinoma](/document/adrenal-cortical-carcinoma/bdc7a08b-a64f-4bd2-9dfc-24331728e85e)
- Rare, unilateral, invasive, enhancing mass
- Venous invasion, distant metastases
- May contain fat: Engulfed retroperitoneal fat vs. lipomatous metaplasia
- ## Renal Angiomyelolipoma
- Exophytic upper pole angiomyolipoma may mimic
- Coronal reconstruction/MR helpful to determine organ of origin
# PATHOLOGY
- ## General Features
- ### Etiology
- Unknown
- Best hypothesis: Reticuloendothelial cell metaplasia of capillaries in adrenal (stress/infection/necrosis)
- Secondary hypothesis: Myelolipoma represents site of extramedullary hematopoiesis
- ### Associated abnormalities
- Adrenal collision tumors (coexistent myelolipoma and adenoma typical)
- Large, bilateral myelolipomas reported with longstanding, poorly treated congenital adrenal hyperplasia
- ## Gross Pathologic & Surgical Features
- Cut section: Fat, soft tissue components
- ## Microscopic Features
- Mature fat cells and megakaryocytes; no malignant cells
- Calcification
- Hemorrhage within larger lesions
# CLINICAL ISSUES
- ## Presentation
- ### Most common signs/symptoms
- Asymptomatic
- Usually incidental finding on CT, MR
- Typically biochemically nonfunctioning
- Symptomatic
- Acute abdomen: Flank pain due to rupture and hemorrhage
- Case reports of hormonally active tumors: Cushing, Conn syndromes, virilization
- Diagnosis: Pathognomonic MR/CT features
- Biopsy reserved for larger, atypical lesions, though prone to sampling error
- ## Demographics
- ### Age
- Usually older patients (50-70 years old)
- ### Epidemiology
- Autopsy incidence: 0.2-0.4%
- ## Natural History & Prognosis
- Complication: Rupture with hemorrhage (rare)
- Prognosis: Excellent
- ## Treatment
- When diagnosis is certain, surgery not needed for lesions < 5-7 cm
- Surgery reserved for larger, symptomatic, or atypical lesions
- Surgical series have confirmed utility of laparoscopic resection
# DIAGNOSTIC CHECKLIST
- ## Consider
- Differentiate from other tumors (lipid-rich adenoma)
- Key is presence of imaging-apparent adipose tissue; avoid further work-up for incidental mass
- ## Image Interpretation Pearls
- Well-defined, heterogeneous, fat-attenuation tumor on CT
- T1 hyperintense, signal loss with fat suppression
81ce3ad3-c446-4b08-8b87-df9511f95360
@@ -0,0 +1,113 @@
---
title: "Adrenal"
docid: "082ca43c-db5c-4770-aeed-0c6ea317e8fc"
breadcrumbs:
- "Genitourinary"
- "Anatomy"
- "Adrenal"
---
# TERMINOLOGY
- ## Abbreviations
- Adrenal corticotrophic hormone (ACTH)
# GROSS ANATOMY
- ## Overview
- Adrenal (**suprarenal**) glands are part of endocrine and neurological systems
- Essentially different organs within same structure, composed of thick outer cortex and thin inner medulla
- Lie within**perirenal space**bilaterally, bounded by**renal** (**perirenal**)**fascia**, above/medial to kidneys
- Composed of "body" and 2 limbs (medial and lateral)
- ## Anatomic Relationships
- Right adrenal is usually more apical in location
- Lies anterolateral to right crus of diaphragm, medial to liver, and posterior to inferior vena cava (IVC)
- Often pyramidal in shape with inverted V shape on transverse section
- Left adrenal is usually more caudal and lies medial to upper pole of left kidney, lateral to left crus of diaphragm, and posterior to splenic vein and pancreas
- Often crescentic in shape with λ or triangular shape on transverse section
- ## Divisions
- **Adrenal cortex**
- Embryologically derived from mesoderm
- Divided into 3 distinct zones (zona glomerulosa, zona fasciculata, and zona reticularis)
- Secretes **mineralocorticoids**(aldosterone) from zona glomerulosa, **glucocorticoids**(cortisol) from zona fasciculata, and **androgens**from zona reticularis
- **Adrenal medulla**
- Embryologically derived from neural crest
- Part of sympathetic nervous system
- **Chromaffin cells** secrete **catecholamines** (mostly epinephrine) into bloodstream
- **Vessels**,**nerves**, and **lymphatics**
- Arteries
- **Superior adrenal arteries**: Typically 6-8; from inferior phrenic arteries
- **Middle adrenal artery**: 1; from abdominal aorta
- **Inferior adrenal artery**: 1; from renal arteries
- Veins
- **Right adrenal vein** drains into IVC
- **Left adrenal vein** drains into left renal vein (usually after joining left inferior phrenic vein)
- Nerves
- Extensive sympathetic connection to adrenal medulla
- Presynaptic sympathetic fibers from paravertebral ganglia end directly on secretory cells of medulla
- Lymphatics
- Drain to **lumbar** (**aortic** and **caval**) **nodes**
# ANATOMY IMAGING ISSUES
- ## Multimodality Imaging Appearance
- No consensus on "normal" size or thickness of adrenals but average thickness of ~ 3 mm for medial/lateral limbs
- While not based on any strong evidence, > 10-mm thickness can be used as threshold for hyperplasia
- MR: Generally isointense to liver on T1 MR and isointense to slightly hyperintense to liver on T2 MR
- Ultrasound: Easiest to visualize in newborns (as result of physiologic enlargement) and become progressively more difficult to visualize with age
- Right adrenal gland easier to visualize than left (due to lack of liver as acoustic window and overlying bowel gas)
- Adrenal glands in adults usually hypoechoic (juxtaposed against hyperechoic periadrenal fat), although medulla can rarely be discretely seen and appears hyperechoic
- ## Key Concepts
- **Adrenal** (**cortical**) **adenomas**
- Very common (at least 2% of general population) but usually cause no symptoms
- Mostly "nonfunctioning" but identical to "functional" adenomas that cause Cushing/Conn syndrome
- Most adenomas contain abundant lipid (precursor to steroid hormones), allowing definitive diagnosis using CT/MR sequences that highlight lipid
- Lipid is intracellular/intercellular (not macroscopic deposits of fat)
- Best CT technique: Nonenhanced CT with nodule measuring < 10 HU; or multiphase-enhanced CT with nodule demonstrating "washout" kinetics
- Best MR technique: Chemical-shift MR with signal dropout within nodule on opposed-phase images
- Standard imaging features for diagnosis of adenoma should be used for nodules measuring < 4 cm, while lesions > 4 cm should raise concern for malignancy
- **Pheochromocytoma** (tumor of adrenal medulla)
- Signs: Headache, palpitations, excessive perspiration
- 90% arise in adrenal, 90% unilateral, 90% benign
- Similar tumor arising in other chromaffin cells of sympathetic ganglia is called **paraganglioma**
- More common with multiple endocrine neoplasia, neurofibromatosis, and von Hippel-Lindau
- Often markedly hypervascular in arterial phase
- **Adrenal myelolipoma**
- Uncommon benign tumor (usually incidental finding) composed of mature adipose and hematopoietic tissue
- Characterized by presence of **macroscopic fat**
- May have internal soft tissue component or calcification
- **Adrenocortical carcinoma**
- Highly aggressive malignancy with poor prognosis
- Large, heterogeneous mass (often with necrosis, hemorrhage, or calcification) with frequent local invasion, vascular invasion, and distant metastases
- **Cushing syndrome** (excess cortisol)
- Signs: Truncal obesity, hirsutism, hypertension
- Causes: Pituitary tumors (→ adrenal corticotrophic hormone), exogenous (medications) > adrenal adenoma > carcinoma
- **Conn syndrome** (excess aldosterone)
- Signs: Hypertension, hypokalemic alkalosis
- Causes: Adrenal adenomas > hyperplasia > carcinoma
- **Addison syndrome**(adrenal insufficiency)
- Signs: Hypotension, weight loss, altered pigmentation
- Causes: Autoimmune disease > adrenal metastases > adrenal hemorrhage > adrenal infection
# CLINICAL IMPLICATIONS
- ## Clinical Importance
- Rich adrenal blood supply due to endocrine function
- Results in adrenal glands being common site for hematologic **metastases** (lung, breast, melanoma, etc.)
- Adrenal glands respond to stress (trauma, sepsis, surgery, etc.) by secreting ↑ cortisol and epinephrine
- Overwhelming stress may result in **adrenal hemorrhage**or acute adrenal insufficiency (addisonian crisis)
d7703d36-250d-428e-bf99-6439a7cdc980
@@ -1,19 +0,0 @@
---
title: "https://app.statdx.com/document/24559f7a-ed5a-4ab6-90ba-769f0b5c1197/media"
---
[
{
"groupId": "e2f10f6a-0bef-498b-9eb3-1b9558473bfa",
"name": "Selected Images",
"images": [
{
"imageId": "444b7609-9961-4277-a969-7a56d10a6b02",
"caption": "Axial T2 MR shows a cluster of CSF-like cysts in the inferior left basal ganglia ![](/img/arrows/CS.png), a common location for enlarged perivascular spaces. They are often seen at the level of the anterior commissure.",
"title": "Enlarged Perivascular Spaces",
"enhancedTitle": "Enlarged Perivascular Spaces",
"annotated": true,
"flanked": false,
"documentId": "24559f7a-ed5a-4ab6-90ba-769f0b5c1197",
"documentUrl": "/document/v2/24559f7a-ed5a-4ab6-90ba-769f0b5c1197",
"imageTitle": "Enlarged Perivascular Spaces",
"thumbnailUrl": "
@@ -1,19 +0,0 @@
---
title: "https://app.statdx.com/document/24559f7a-ed5a-4ab6-90ba-769f0b5c1197/media"
---
[
{
"groupId": "e2f10f6a-0bef-498b-9eb3-1b9558473bfa",
"name": "Selected Images",
"images": [
{
"imageId": "444b7609-9961-4277-a969-7a56d10a6b02",
"caption": "Axial T2 MR shows a cluster of CSF-like cysts in the inferior left basal ganglia ![](/img/arrows/CS.png), a common location for enlarged perivascular spaces. They are often seen at the level of the anterior commissure.",
"title": "Enlarged Perivascular Spaces",
"enhancedTitle": "Enlarged Perivascular Spaces",
"annotated": true,
"flanked": false,
"documentId": "24559f7a-ed5a-4ab6-90ba-769f0b5c1197",
"documentUrl": "/document/v2/24559f7a-ed5a-4ab6-90ba-769f0b5c1197",
"imageTitle": "Enlarged Perivascular Spaces",
"thumbnailUrl": "
@@ -1,19 +0,0 @@
---
title: "https://app.statdx.com/document/49510d0e-acf7-45cb-9eb1-53f8193b0b6d/media"
---
[
{
"groupId": "415b02cf-df4f-4cef-9c2b-866ef0618ec0",
"name": "Selected Images",
"images": [
{
"imageId": "ccf3ab42-d18d-44f4-9b3f-cc9fd9510d11",
"caption": "Graphic depicts the classic disproportionate frontal lobe atrophy of late-stage frontotemporal dementia (FTD). The sulci are widened & gyri are knife-like ![](/img/arrows/CS.png). Parietooccipital lobes are spared. Gyri around the central sulcus are normal.",
"title": "",
"enhancedTitle": "",
"annotated": true,
"flanked": false,
"documentId": "49510d0e-acf7-45cb-9eb1-53f8193b0b6d",
"documentUrl": "/document/v2/49510d0e-acf7-45cb-9eb1-53f8193b0b6d",
"imageTitle": "",
"thumbnailUrl": "/image/thumbnail/ccf3ab42-d18d-44f4-9b3f-
@@ -1,10 +0,0 @@
---
title: "https://app.statdx.com/document/49510d0e-acf7-45cb-9eb1-53f8193b0b6d/tables"
---
[
"
# Imaging Features for Various Clinical Subtypes of Frontotemporal Dementia
| Clinical Subtypes | Imaging Features |
| --- | --- |
| bvFTD | MR: Atrophy of frontal & temporal lobes; asymmetric right frontal &/or temporal lobe atrophy may occur NM: Decreased perfusion & metabolism in frontal &/or te |
@@ -1,20 +0,0 @@
---
title: "https://app.statdx.com/document/9f9eda8c-7e3c-4292-9861-4b8abc2c6474/media"
---
[
{
"groupId": "fb01ca50-5af0-419d-ad89-6f4f2d980fd2",
"name": "Selected Images",
"images": [
{
"imageId": "01274ce7-fce5-4f42-bd69-b5a99e6a4930",
"caption": "Axial F-18 FDG PET shows findings associated with frontotemporal dementia (FTD), predominantly frontal ![](/img/arrows/WS.png) and temporal lobe hypometabolism. Functional changes may occur prior to CT or MR changes.",
"title": "",
"enhancedTitle": "",
"annotated": true,
"flanked": false,
"documentId": "9f9eda8c-7e3c-4292-9861-4b8abc2c6474",
"documentUrl": "/document/v2/9f9eda8c-7e3c-4292-9861-4b8abc2c6474",
"imageTitle": "",
"thumbnailUrl": "/image/thumbnail/01274ce7-fce5-4f42-bd69-b5a99e6a4930?size=168&quality=85"
},
@@ -1,14 +0,0 @@
---
title: "https://app.statdx.com/document/content/24559f7a-ed5a-4ab6-90ba-769f0b5c1197"
---
# ESSENTIAL INFORMATION
- ## Key Differential Diagnosis Issues
- Key imaging questions
- Does lesion follow CSF on all modalities/sequences?
- Is there any associated mass effect?
- Does lesion enhance?
</l
@@ -1,14 +0,0 @@
---
title: "https://app.statdx.com/document/content/24559f7a-ed5a-4ab6-90ba-769f0b5c1197"
---
# ESSENTIAL INFORMATION
- ## Key Differential Diagnosis Issues
- Key imaging questions
- Does lesion follow CSF on all modalities/sequences?
- Is there any associated mass effect?
- Does lesion enhance?
</l
@@ -1,10 +0,0 @@
---
title: "https://app.statdx.com/document/content/834ccc3e-2116-4295-8408-0ac9a06bd2ff"
---
# KEY FACTS
- ## Terminology
- Normal-pressure hydrocephalus (NPH): Ventriculomegaly out of proportion to sulcal enlargement in setting of normal cerebrospinal fluid (CSF) pressure
- ## Imaging</h
@@ -1,10 +0,0 @@
---
title: "https://app.statdx.com/document/content/9f9eda8c-7e3c-4292-9861-4b8abc2c6474"
---
# KEY FACTS
- ## Terminology
- Frontotemporal dementia (FTD): Progressive neurodegenerative disorder of frontal/anterior temporal lobes
- ## Imaging
@@ -1,10 +0,0 @@
---
title: "https://app.statdx.com/document/content/a1bedda5-6478-40b2-98e7-6c5f5363b06f"
---
# IMAGING ANATOMY
- ## Overview
- Attention control network is a constellation of distributed brain networks processing attention to external stimuli and symbols
- Many aliases: Task-positive network, frontoparietal network, executive control network, and central executiv
@@ -1,10 +0,0 @@
---
title: "https://app.statdx.com/document/content/a1bedda5-6478-40b2-98e7-6c5f5363b06f"
---
# IMAGING ANATOMY
- ## Overview
- Attention control network is a constellation of distributed brain networks processing attention to external stimuli and symbols
- Many aliases: Task-positive network, frontoparietal network, executive control network, and central executiv
@@ -1,10 +0,0 @@
---
title: "https://app.statdx.com/document/content/e1b27954-6591-4bb0-a659-b13790492620"
---
# KEY FACTS
- ## Terminology
- Creutzfeldt-Jakob disease (CJD): Rapidly progressing, fatal, potentially transmissible dementia caused by prion
- ## Imaging
@@ -1,11 +0,0 @@
---
title: "https://app.statdx.com/document/content/e8e46d1d-46d2-4e5a-880f-f025a84c5871"
---
# KEY FACTS
- ## Terminology
- Progressive neurodegenerative dementia
- Parkinsonism, visual hallucinations prominent
- Caused by abnormal accumulation of α-synuclein protein
@@ -1,17 +0,0 @@
---
title: "https://app.statdx.com/document/e1b27954-6591-4bb0-a659-b13790492620/media"
---
[
{
"groupId": "a8f1dd51-2e0e-4f07-af00-6623d1c4e2d4",
"name": "Selected Images",
"images": [
{
"imageId": "e4dd9275-5048-4513-8288-980aa8250267",
"caption": "A 53-year-old man with rapidly progressing cognitive decline due to sporadic Creutzfeldt-Jakob disease (sCJD) is shown. Axial DWI MR demonstrates symmetric bilateral basal ganglia (BG) diffusion restriction ![](/img/arrows/CS.png) and asymmetric cortical restricted diffusion (cortical ribbon sign) in bilateral (right > > left) hemispheres ![](/img/arrows/CO.png).",
"title": "",
"enhancedTitle": "",
"annotated": true,
"flanked": false,
"documentId": "e1b27954-6591-4bb0-a659-b13790492620",
"documentUrl": "/document/v2/e1b27954-6591
@@ -1,14 +0,0 @@
---
title: "https://app.statdx.com/document/e8e46d1d-46d2-4e5a-880f-f025a84c5871/media"
---
[
{
"groupId": "210f7378-e2e6-472b-b1ad-2571bafd02be",
"name": "Selected Images",
"images": [
{
"imageId": "d2ff700c-f618-401b-94df-595198c45827",
"caption": "Right & left medial sagittal FDG PET source & 3DSSP images of a 74-year-old man with dementia with Lewy bodies (DLB) presenting with visual hallucinations show severe ↓ metabolic activity in left visual cortex ![](/img/arrows/CO.png) & precuneus ![](/img/arrows/WS.png). Note moderate ↓ metabolic activity in right occipital lobe ![](/img/arrows/CS.png) & precuneus ![](/img/arrows/WC.png) & relative sparing of bilateral posterior cingulate gyri ![](/img/arrows/CC.png).",
"title": "",
"enhancedTitle": "",
"annotated":
@@ -1,19 +0,0 @@
---
title: "https://app.statdx.com/document/f59dab57-c511-4369-8fcc-592421a4b8d1/media"
---
[
{
"groupId": "bce2eb1d-5b42-493d-b6f2-86c7fb747dcb",
"name": "Selected Images",
"images": [
{
"imageId": "add7af59-3e22-4ebd-bda3-585280f734e0",
"caption": "Axial graphic of vascular dementia (VaD) shows diffuse cerebral atrophy, focal volume loss due to multiple chronic infarcts ![](/img/arrows/CS.png), an acute left occipital lobe infarct ![](/img/arrows/CO.png), and small lacunar infarcts in the basal ganglia/thalami ![](/img/arrows/CC.png).",
"title": "",
"enhancedTitle": "",
"annotated": true,
"flanked": false,
"documentId": "f59dab57-c511-4369-8fcc-592421a4b8d1",
"documentUrl": "/document/v2/f59dab57-c511-4369-8fcc-592421a4b8d1",
"imageTitle": "",
"thumbnailUr
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title: "https://app.statdx.com/main"
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+168 -1
View File
@@ -88,6 +88,30 @@ async def run(args):
async with capture_count_lock: async with capture_count_lock:
print(f"[heartbeat] captured={capture_count}") print(f"[heartbeat] captured={capture_count}")
# Build an in-memory index of content_hash -> list of index entries for quick dedupe lookups.
# If older index lines lack a content_hash but reference a body file, hash that file once at startup.
in_memory_index = {}
try:
if index_path.exists():
with open(index_path, 'r', encoding='utf-8') as idxf:
for line in idxf:
try:
j = json.loads(line)
except Exception:
continue
ch = j.get('content_hash')
body = j.get('body_file')
if not ch and body and os.path.exists(body):
try:
with open(body, 'rb') as bf:
ch = hashlib.sha256(bf.read()).hexdigest()
except Exception:
ch = None
if ch:
in_memory_index.setdefault(ch, []).append(j)
except Exception:
in_memory_index = {}
async with async_playwright() as p: async with async_playwright() as p:
browser_type = p.chromium browser_type = p.chromium
# Launch persistent context # Launch persistent context
@@ -102,6 +126,82 @@ async def run(args):
page = await context.new_page() page = await context.new_page()
async def attempt_autologin(page, username: str, password: str, post_login_selector: str, wait_after: float = 1.0):
"""Async form-based autologin similar to save_page_snapshots.attempt_autologin."""
if not username or not password:
return False
# selectors
user_selectors = ['input[name="username"]', 'input.usernameSelector', 'input[type="email"]', 'input[name*="email" i]', 'input[name*="user" i]', 'input[type="text"]']
pass_selectors = ['input[type="password"]', 'input[name="password"]', 'input.passwordSelector']
user_sel = None
for sel in user_selectors:
try:
el = await page.query_selector(sel)
if el:
user_sel = sel
break
except Exception:
continue
pass_sel = None
for sel in pass_selectors:
try:
el = await page.query_selector(sel)
if el:
pass_sel = sel
break
except Exception:
continue
if not user_sel or not pass_sel:
try:
with open(output / '_debug_events.log', 'a', encoding='utf-8') as dbg:
dbg.write(f"{now_ts()}\tAUTOLOGIN\tselectors_missing\n")
except Exception:
pass
return False
try:
await page.fill(user_sel, username)
await asyncio.sleep(0.1)
await page.fill(pass_sel, password)
await asyncio.sleep(0.1)
# try submit
submit_selectors = ['button[type=submit]', 'input[type=submit]', 'button:has-text("Sign in")', 'button:has-text("Sign In")', 'button:has-text("Log in")']
clicked = False
for s in submit_selectors:
try:
btn = await page.query_selector(s)
if btn:
await btn.click()
clicked = True
break
except Exception:
continue
if not clicked:
try:
await page.press(pass_sel, 'Enter')
except Exception:
pass
# wait for post-login selector
try:
if post_login_selector:
await page.wait_for_selector(post_login_selector, timeout=10000)
except Exception:
pass
await asyncio.sleep(wait_after)
return True
except Exception:
try:
with open(output / '_debug_events.log', 'a', encoding='utf-8') as dbg:
dbg.write(f"{now_ts()}\tAUTOLOGIN\tfailed_exception\n")
except Exception:
pass
return False
async def on_response(resp): async def on_response(resp):
nonlocal capture_count nonlocal capture_count
try: try:
@@ -237,6 +337,51 @@ async def run(args):
# skip if still failing # skip if still failing
return return
# compute content hash for dedupe
content_hash = None
try:
if 'txt' in locals() and isinstance(txt, str):
content_hash = hashlib.sha256(txt.encode('utf-8')).hexdigest()
elif 'pretty' in locals() and isinstance(pretty, str):
content_hash = hashlib.sha256(pretty.encode('utf-8')).hexdigest()
elif 'data' in locals() and isinstance(data, (bytes, bytearray)):
content_hash = hashlib.sha256(data).hexdigest()
except Exception:
content_hash = None
# prepare the meta filename we'll write for this response
new_meta_name = f"{safe}_{h}_{ts}.meta.json"
new_meta_abs = os.path.abspath(str(output / new_meta_name))
# If older responses exist with the same content, delete them (fast in-memory lookup)
try:
matches = in_memory_index.get(content_hash, []) if content_hash else []
for j in matches:
body = j.get('body_file')
metaf = j.get('meta_file')
try:
if body and os.path.exists(body) and os.path.abspath(body) != os.path.abspath(body_path):
os.remove(body)
try:
with open(output / '_debug_events.log', 'a', encoding='utf-8') as dbg:
dbg.write(f"{now_ts()}\tDELETED_OLD_BODY\t{body}\n")
except Exception:
pass
except Exception:
pass
try:
if metaf and os.path.exists(metaf) and os.path.abspath(metaf) != new_meta_abs:
os.remove(metaf)
try:
with open(output / '_debug_events.log', 'a', encoding='utf-8') as dbg:
dbg.write(f"{now_ts()}\tDELETED_OLD_META\t{metaf}\n")
except Exception:
pass
except Exception:
pass
except Exception:
pass
meta = { meta = {
'url': url, 'url': url,
'resource_type': rtype, 'resource_type': rtype,
@@ -245,12 +390,17 @@ async def run(args):
'response_headers': resp_headers, 'response_headers': resp_headers,
'response_body_file': body_path, 'response_body_file': body_path,
'response_excerpt': excerpt, 'response_excerpt': excerpt,
'content_hash': content_hash,
} }
meta_name = f"{safe}_{h}_{ts}.meta.json" meta_name = f"{safe}_{h}_{ts}.meta.json"
save_text(output / meta_name, json.dumps(meta, ensure_ascii=False, indent=2)) save_text(output / meta_name, json.dumps(meta, ensure_ascii=False, indent=2))
try: try:
entry = {'url': url, 'resource_type': rtype, 'timestamp': ts, 'body_file': body_path, 'meta_file': str(output / meta_name), 'excerpt': excerpt, 'content_hash': content_hash}
with open(index_path, 'a', encoding='utf-8') as idx: with open(index_path, 'a', encoding='utf-8') as idx:
idx.write(json.dumps({'url': url, 'resource_type': rtype, 'timestamp': ts, 'body_file': body_path, 'meta_file': str(output / meta_name), 'excerpt': excerpt}, ensure_ascii=False) + '\n') idx.write(json.dumps(entry, ensure_ascii=False) + '\n')
# update in-memory index
if content_hash:
in_memory_index.setdefault(content_hash, []).append(entry)
except Exception: except Exception:
pass pass
@@ -290,6 +440,20 @@ async def run(args):
except Exception: except Exception:
pass pass
# attempt autologin (form-based) if credentials provided
uname = args.username or os.getenv('STATDX_USERNAME')
pwd = args.password or os.getenv('STATDX_PASSWORD')
if uname and pwd:
try:
ok = await attempt_autologin(page, uname, pwd, args.post_login_selector)
try:
with open(output / '_debug_events.log', 'a', encoding='utf-8') as dbg:
dbg.write(f"{now_ts()}\tAUTOLOGIN_RESULT\t{ok}\n")
except Exception:
pass
except Exception:
pass
# If interactive, let user log in; otherwise start capture immediately # If interactive, let user log in; otherwise start capture immediately
if not args.no_prompt: if not args.no_prompt:
print('When you have logged in in the opened browser, press Enter here to continue and capture...') print('When you have logged in in the opened browser, press Enter here to continue and capture...')
@@ -325,6 +489,9 @@ def parse_args():
parser.add_argument('--headless', action='store_true') parser.add_argument('--headless', action='store_true')
parser.add_argument('--continuous', action='store_true') parser.add_argument('--continuous', action='store_true')
parser.add_argument('--no-prompt', action='store_true') parser.add_argument('--no-prompt', action='store_true')
parser.add_argument('--username', help='STATdx username (or use STATDX_USERNAME env var)')
parser.add_argument('--password', help='STATdx password (or use STATDX_PASSWORD env var)')
parser.add_argument('--post-login-selector', default='#ds-app', help='Selector that indicates a successful login')
parser.add_argument('--channel', default=os.getenv('PLAYWRIGHT_CHROME_CHANNEL', 'chrome')) parser.add_argument('--channel', default=os.getenv('PLAYWRIGHT_CHROME_CHANNEL', 'chrome'))
parser.add_argument('--capture-types', default='xhr,fetch,document,other') parser.add_argument('--capture-types', default='xhr,fetch,document,other')
return parser.parse_args() return parser.parse_args()