Accute subdural hematoma of the posterior cerebral fossa

Our work is about a 28-year-old man, admitted to the emergency room for a head trauma. A cerebral CT was performed who shows a biconvex sub-tentorial extra-axial collection spontaneously hyperdense suggesting an extra dural hematoma of the posterior cerebral fossa. The surgical evacuation found that it was an acute subdural hematoma (ASDH) (A,B). The ASDH is a subdural blood collection, complicating venous more than arterial bleeding with male predominance and an age between 20 and 40. Most commonly supratentorial, sub-tentorial location is rare it represents less than 5%. The clinic associate alteration of consciousness, signs of focusing, vegetative manifestations and epilepsy. The diagnosis is based on a CT scan which shows an extra-axial hyperdense collection with more or less associated lesions. After medical management the treatment is surgical, based on the removal of the hematoma by suboccipital craniectomy.