Question

Rupture of a berry aneurysm most commonly results in:

• A. Subarachnoid hemorrhage
• B. Subdural hemorrhage
• C. Extradural hemorrhage
• D. Intra-parenchymal hemorrhage

Hint:

Berry aneurysms sit in the subarachnoid space at the circle of Willis.

Answer 1

The Correct Option is A

Step 1: Berry (saccular) aneurysms arise at the branch points of the circle of Willis, which lie in the subarachnoid space at the base of the brain.

Step 2: When such an aneurysm ruptures, blood escapes directly into the subarachnoid space, producing subarachnoid hemorrhage. Rupture of a berry aneurysm is in fact the most common cause of spontaneous (non-traumatic) subarachnoid hemorrhage.

Step 3: Subdural hemorrhage results from torn bridging veins and extradural hemorrhage from a torn middle meningeal artery, both usually traumatic. Intraparenchymal hemorrhage is typically due to hypertension. None of these is the usual result of a ruptured berry aneurysm.

Step 4: Therefore the correct answer is subarachnoid hemorrhage, option a.