On exam, she was obtunded with right sided weakness. Subarachnoid Hemorrhage - Middle Cerebral Artery Aneurysm. Axial CT scans without contrast. Note the blood in the left Sylvian fissure. In some ...

Note the bright signal which signifies blood in the interhemispheric fissure, Sylvian fissures, and basal cisterns ... The most common causes of spontaneous SAH are rupture of a saccular (berry) ...

A cerebral angiogram shows no evidence of an aneurysm, arteriovenous malformation ... the head CT promptly revealed SAH in the left Sylvian fissure, which is often seen with aneurysmal or non ...

The aneurysm is then collapsed and the field ... Subarachnoid hemorrhage can extend beyond the basal cisterns into the sylvian fissures or into the ventricles or brain parenchyma.

"He was fortunate because the knife entered in the Sylvian fissure," said Dr. Joshua Bederson, the neurosurgeon who treated Loor at Mount Sinai Hospital. The fissure, Bederson explained ...