Which artery is the most common site of intracranial berry aneurysms?
- A Middle cerebral artery bifurcation
- B Posterior communicating artery
- C Anterior communicating artery ✓
- D Basilar artery tip
Correct answer: C. Anterior communicating artery
Explanation
The anterior communicating artery is the single most frequent location, accounting for roughly one third of berry aneurysms; the posterior communicating artery is next, followed by the middle cerebral artery bifurcation. Berry aneurysms arise at sites of congenital deficiency of the tunica media at arterial branch points in the circle of Willis and rupture to cause subarachnoid haemorrhage. Indian exam convention follows this ordering of sites as given in standard pathology texts.
Reference: Robbins and Cotran Pathologic Basis of Disease, 10th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.