CTICasesTraumatic Right Hemidiaphragm Hernia
[...]. Traumatic Right Hemidiaphragm Hernia. CTICases. Published November 9, 2021. https://str-case-explorer.pages.dev/c/uj655
Imaging findings
Chest radiograph shows elevated liver dome with an undercut margin. CT chest and abdomen confirms a right diaphragmatic hernia with abdominal fat and liver tissue herniating into the thorax, demonstrating a classic 'collar sign' (hourglass constriction) at the site of the diaphragmatic tear.
Key takeaways
Traumatic diaphragmatic rupture is often a delayed diagnosis. Radiographic features include elevated diaphragmatic contours with an 'undercut' margin. CT is diagnostic, demonstrating the 'collar sign' (constriction of herniated viscera) and direct visualization of the muscular defect, differentiating it from eventration.
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