Presentation
Head trauma.
Patient Data
The hematoma is lentiform in shape, locates at the vertex, crosses the sagittal suture, and displaces the superior sagittal sinus inferiorly. Some hypodensity spots within the hematoma are suggestive of acute extravasation of blood (swirl sign).
The left subarachnoid hemorrhage and parenchymal hemorrhagic contusion are also seen at the left frontal lobe.
No skull fractures.
A hematoma measuring 64x76x18 mm.
Case Discussion
CT findings are compatible with venous extradural hemorrhage probably bleeding from the superior sagittal sinus. Unlike typically extradural hemorrhages, which do not cross sutures and whose source is from a torn meningeal artery.