What is 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 - and explain in detail?
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