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e-CASES: Subarachnoid Hemorrhage, Traumatic, Pneumothorax, Sternum fracture


60-year old patient, high-speed road accident, no other clinical data.


Learning to read a body scan.


Cranioencephalic space:Subarachnoid hemorrhage in the parafalcine cortical sulci of the vertex, right temporal and occipital sulci, and in the interpeduncular cistern.Normal-sized ventricles.No deviations of median line structures.No other intracerebral posttraumatic lesions.


Spinal space:No posttraumatic lesions.


Thoracic space:Small volume of right pneumothorax.Moderate anterior hemomediastinum associated with non-displaced transverse fracture of the distal third of the body of the sternum.No large vessel lesions.Bilateral posterobasal ventilation disturbances.


Abdominopelvic space:No pneumoperitoneum.No solid organ lesions (benign cortical cysts on the left kidney).No intraperitoneal effusion.No gastrointestinal parietal thickening.


Subarachnoid Hemorrhage, Traumatic, Pneumothorax, Sternum fracture




Patient treated with standard monitoring; favorable progression.


Key points

Important points:


- Nine times out of ten, posttraumatic hemomediastinum is not caused by an aortic lesion

- Triangular hyperdensity at the interpeduncular cistern indicates the presence of SAH.



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