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 ---
 title: "Tracheal Dilatation"
 docid: "25c1fd77-52ff-4a56-b5c4-6ee1335ba369"
+authors:
+  - key: "fa682303-6426-4b97-8c60-783051febb88"
+    value: "Jorge Alberto Carrillo-Bayona, MD"
+breadcrumbs:
+  -
+    name: "Chest"
+    slug: "chest"
+    treeNodeId: "23b17a2b-c629-4f3b-b960-0bfdc5d138ca"
+  -
+    name: "Differential Diagnosis"
+    slug: "differential-diagnosis"
+    treeNodeId: "41e2b114-bb5b-4430-86a8-4c667ef0f50a"
+  -
+    name: "Airways"
+    slug: "airways"
+    treeNodeId: "dbd08dc8-069b-455c-af2f-73376c667e07"
+  -
+    name: "General Imaging Patterns"
+    slug: "general-imaging-patterns"
+    treeNodeId: "569ccd87-4cb8-4a9e-83f4-c8ac16b26c5e"
+  -
+    name: "Tracheal Dilatation"
+    slug: "tracheal-dilatation"
+    treeNodeId: null
+category: "Chest"
+documentVersionId: "6c3deb57-9d58-49f9-a704-dd07ac90b7b4"
+imageCount: 8
+isBookmarked: false
+isComparable: false
+isInCompareCart: false
+lastUpdated: "02/10/20"
+pageDescription: "Tracheal Dilatation"
+pageKeywords: "Chest, Differential Diagnosis, Airways, General Imaging Patterns, Tracheal Dilatation"
+pageTitle: "Tracheal Dilatation | STATdx"
+enhancedTitle: "Tracheal Dilatation"
+type: "DDX"
 breadcrumbs:
  - "Chest"
  - "Differential Diagnosis"
@@ -57,4 +93,47 @@ breadcrumbs:
          - More common in men
          - Tracheal diameter > 30 mm (81.2%)
          - Bronchiectasis (48.6-57.6%)
-          - Tracheal wall corrugated due to mucosa herniating between tracheal rings
+          - Tracheal wall corrugated due to mucosa herniating between tracheal rings
+
+
+## Images
+
+
+### Selected Images
+
+![Axial HRCT of a 62-year-old man with upper lobe-predominant fibrosis from chronic hypersensitivity pneumonitis shows tracheal dilatation <img src='/img/arrows/CS.png'/> and upper lobe predominant honeycombing <img src='/img/arrows/CO.png'/>.](images/app.statdx.com_image_thumbnail_5670debe-e644-4585-9a40-f7d4a53018aa_size_168_quality_85_22258a97_20251018T064726Z.jpg)
+**Upper Lobe Fibrosis**
+*Axial HRCT of a 62-year-old man with upper lobe-predominant fibrosis from chronic hypersensitivity pneumonitis shows tracheal dilatation <img src='/img/arrows/CS.png'/> and upper lobe predominant honeycombing <img src='/img/arrows/CO.png'/>.*
+
+![Axial HRCT of a 62-year-old man with upper lobe-predominant fibrosis from chronic hypersensitivity pneumonitis shows tracheal dilatation <img src='/img/arrows/CS.png'/> and upper lobe predominant honeycombing <img src='/img/arrows/CO.png'/>.](images/app.statdx.com_image_thumbnail_5670debe-e644-4585-9a40-f7d4a53018aa_size_174_quality_85_3228f37e_20251018T064243Z.jpg)
+**Upper Lobe Fibrosis**
+*Axial HRCT of a 62-year-old man with upper lobe-predominant fibrosis from chronic hypersensitivity pneumonitis shows tracheal dilatation <img src='/img/arrows/CS.png'/> and upper lobe predominant honeycombing <img src='/img/arrows/CO.png'/>.*
+
+![Coronal CT (minIP reformation) of the same patient shows dilatation of the trachea <img src='/img/arrows/CO.png'/> and mainstem bronchi <img src='/img/arrows/CS.png'/>. This phenomenon is thought to be related to traction exerted by surrounding pulmonary fibrosis similar to traction bronchiectasis and bronchiolectasis seen in the same process.](a5a3018c-8884-4a41-9bc9-334b53cd58a2)
+**Upper Lobe Fibrosis**
+*Coronal CT (minIP reformation) of the same patient shows dilatation of the trachea <img src='/img/arrows/CO.png'/> and mainstem bronchi <img src='/img/arrows/CS.png'/>. This phenomenon is thought to be related to traction exerted by surrounding pulmonary fibrosis similar to traction bronchiectasis and bronchiolectasis seen in the same process.*
+
+![Frontal chest radiograph of an intubated patient demonstrates bulging of the tracheal wall <img src='/img/arrows/CS.png'/> secondary to overdistension of the endotracheal tube cuff.](images/app.statdx.com_image_thumbnail_7cb3b2f3-f444-446c-be9a-1f7d772f3a88_size_168_quality_85_c5b6c9d1_20251018T064726Z.jpg)
+**Overdistention of Endotracheal Tube Cuff**
+*Frontal chest radiograph of an intubated patient demonstrates bulging of the tracheal wall <img src='/img/arrows/CS.png'/> secondary to overdistension of the endotracheal tube cuff.*
+
+![Coronal CT (minIP reformation) of a patient with tracheostomy cannula shows bulging of the tracheal wall <img src='/img/arrows/CS.png'/> by overdistension of the endotracheal tube cuff. Dilatation of the trachea from overdistention of an endotracheal tube cuff or tracheostomy cannula often results in tracheal injury with increased risk of subsequent tracheal stenosis.](b6c75003-5aea-4a90-a9b4-d969171ed105)
+**Overdistention of Endotracheal Tube Cuff**
+*Coronal CT (minIP reformation) of a patient with tracheostomy cannula shows bulging of the tracheal wall <img src='/img/arrows/CS.png'/> by overdistension of the endotracheal tube cuff. Dilatation of the trachea from overdistention of an endotracheal tube cuff or tracheostomy cannula often results in tracheal injury with increased risk of subsequent tracheal stenosis.*
+
+![Composite image with axial NECT at the thoracic inlet (left) and axial NECT at a lower level (right) of a patient with COPD shows the normal shape of the extrathoracic trachea <img src='/img/arrows/CS.png'/> and the saber-sheath configuration <img src='/img/arrows/CO.png'/> of the intrathoracic trachea.](images/app.statdx.com_image_thumbnail_ff259781-7958-48ea-bcd0-e18ea3e59c15_size_168_quality_85_b8a5fd6d_20251018T064726Z.jpg)
+**Saber-Sheath Trachea**
+*Composite image with axial NECT at the thoracic inlet (left) and axial NECT at a lower level (right) of a patient with COPD shows the normal shape of the extrathoracic trachea <img src='/img/arrows/CS.png'/> and the saber-sheath configuration <img src='/img/arrows/CO.png'/> of the intrathoracic trachea.*
+
+![Axial NECT of a 59-year-old woman with tracheal diverticulum demonstrates a right paratracheal air collection <img src='/img/arrows/CO.png'/>. Note the diminutive and subtle connection with the trachea <img src='/img/arrows/CS.png'/>.](images/app.statdx.com_image_thumbnail_57389c8c-db65-45e2-844b-3c7879b978a5_size_168_quality_85_be7d0cd2_20251018T064726Z.jpg)
+**Tracheal Diverticulum**
+*Axial NECT of a 59-year-old woman with tracheal diverticulum demonstrates a right paratracheal air collection <img src='/img/arrows/CO.png'/>. Note the diminutive and subtle connection with the trachea <img src='/img/arrows/CS.png'/>.*
+
+![Sagittal NECT (MIP reformation) of a patient with Mounier-Kuhn syndrome shows tracheal dilatation <img src='/img/arrows/CO.png'/> with abundant characteristic tracheobronchial diverticula <img src='/img/arrows/CS.png'/>. Tracheobronchial dilatation leads to impaired airway secretion clearance associated with recurrent infection and cough.](images/app.statdx.com_image_thumbnail_7b0b113d-6eb7-4267-9b7d-0448ee25497a_size_168_quality_85_91d706f1_20251018T064726Z.jpg)
+**Mounier-Kuhn Syndrome**
+*Sagittal NECT (MIP reformation) of a patient with Mounier-Kuhn syndrome shows tracheal dilatation <img src='/img/arrows/CO.png'/> with abundant characteristic tracheobronchial diverticula <img src='/img/arrows/CS.png'/>. Tracheobronchial dilatation leads to impaired airway secretion clearance associated with recurrent infection and cough.*
+
+![Coronal CECT minIP reformation of the same patient shows airway dilatation <img src='/img/arrows/CO.png'/> and the corrugated appearance <img src='/img/arrows/CS.png'/> due to mucosa herniating between tracheal rings.](040a04a4-0254-40e6-b520-764cffbbb50c)
+**Mounier-Kuhn Syndrome**
+*Coronal CECT minIP reformation of the same patient shows airway dilatation <img src='/img/arrows/CO.png'/> and the corrugated appearance <img src='/img/arrows/CS.png'/> due to mucosa herniating between tracheal rings.*
+