1 MCQs in Pathology for NEET PG
A 48-year-old woman with hypertension and a 25-pack-year smoking history presents with sudden-onset "thunderclap" headache described as the worst headache of her life, accompanied by nausea, photophobia, and nuchal rigidity. Non-contrast CT shows subarachnoid blood in the basal cisterns and Sylvian fissures. CT angiography reveals a 7 mm saccular aneurysm at the anterior communicating artery. The structure marked **A** in the diagram represents this berry aneurysm. Which of the following best explains the pathophysiological basis for the development of this lesion at arterial bifurcations within the Circle of Willis?
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