Diaphragmatic rupture CT
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
CT
- Direct discontinuity of the hemidiaphragm
- Intrathoracic herniation of abdominal contents. The stomach and colon are the most common viscera to herniate on the left side and the liver is the most common viscus to herniate on the right side.
- The collar sign, a waistlike constriction of the herniating hollow viscus at the site of the diaphragmatic tear
- The dependent viscera sign. When a patient with a ruptured diaphragm lies supine at CT examination, the herniated viscera (bowel or solid organs) are no longer supported posteriorly by the injured diaphragm and fall to a dependent position against the posterior ribs.