CTICasesBlunt Trauma with Sternoclavicular Joint Dislocation and Diaphragmatic Eventration Mimicking Rupture
Imaging findings
Multiplanar chest CT in a motorcycle crash patient demonstrates severe chest wall injuries, including an elevated right hemidiaphragm with thinning of the posterior diaphragm and an intact anterior muscle on sagittal views, mimicking a rupture but consistent with eventration. Additionally, a left sternoclavicular joint dislocation is present, characterized by joint widening and periarticular gas.
Key takeaways
Elevated diaphragms in the setting of trauma can mimic traumatic diaphragmatic rupture; looking for a smooth, tapered transition of the muscle and the absence of herniated abdominal contents on sagittal and coronal CT can help differentiate eventration from a tear. Sternoclavicular joint dislocations are uncommon injuries that are easily overlooked but can be identified on coronal reformats by joint widening, misalignment, and tracking gas.
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