Most common site for berry aneurysm rupture: (A) Anterior circulation of brai, (B) Posterior circulation of brain, (C) Ascending aoa, (D) Descending aoa
Answer is A. Ans. is 'a' i.e., Anterior circulation of brain The most common sites in descending order of frequency are - Li Proximal poion of anterior communicating aery (at the junction of anterior communicating aery with cerebral aery) At the origin of the posterior communicating aery from the stem of the internal carotid aery. At the first major bifurcation of middle cerebral aery. At the bifurcation of internal carotid into middle and anterior cerebral aeries. Veibrobasilar bifurcation (3%)