Mahnoor Hafeez, Binish Rasheed, Amjad Sattar.
Intracranial atherosclerosis presenting as sub arachnoid hemorrhage - a unique scenario.
Pak J Radiol Jan ;28(3):246-8.

Intracranial atherosclerotic disease (ICAD) represents the most common cause of ischemic stroke worldwide. Here, we present a unique manifestation of ICAD presenting as headache in a 53 years old Hypertensive and Diabetic patient. CT demonstrated sulcal sub-arachnoid hemorrhage (sSAH), with no infarct. He was referred to Dow University Hospital for CT Angiography examination, which revealed > 90% narrowing of the supraclinoid segments of Atherosclerotic internal carotid arteries (ICA) with extensive leptomeningeal collaterals, supplied by posterior circulation. To the best of authors` knowledge, only single case analogous to it, on DSA has been published in the International Radiology literature.

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