A female presented with the severe headache of sudden onset. On CT scan a diagnosis of subarachnoid haemorrhage is made. The most common site of subarachnoid haemorrhage is -: (A) Middle meningeal aery, (B) Berry aneurysm rupture, (C) Basilar aery, (D) Subdural venous sinuses
Answer is B. Excluding head trauma the most common cause of SAH is rupture of a saccular aneurysm (Berry aneurysm or congenital aneurysm)." Ref : Harrison, 17/e p1726