Large Traumatic Diaphragmatic Rupture with Dependent Viscera Sign
Imaging findings
In a severely injured patient ejected from a motor vehicle, chest imaging shows an abnormal diaphragmatic contour with pulmonary contusion, gastric fundus abutting the posterior chest wall, and colon herniated high into the thorax -- a striking example of the dependent viscera sign, with a 14 cm diaphragmatic defect so large that essentially no residual diaphragm is visible; the gastroesophageal junction is confirmed intact.
Key takeaways
The dependent viscera sign -- abdominal organs resting directly against the posterior chest wall without the normal diaphragmatic sling holding them up -- is a reliable indicator of diaphragmatic rupture, and very large defects can leave essentially no visible residual diaphragm, making the crura (rather than the diaphragm itself) the key landmark for confirming the gastroesophageal junction remains intact for surgical planning.
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