Internal carotid artery aneurysm

Presentation

Severe headache

Patient Data

Age: 50 years
Gender: Male
DSA (angiography)

A saccular aneurysm arises from the communicating segment (C7) of the left internal carotid artery.
The aneurysm neck size is 2.0 mm. 

Non-contrast CT scan shows diffuse subarachnoid hemorrhage in the left sylvan fissure and suprasellar cistern
Contrast CT scan shows a saccular aneurysm formation of the left ICA (C7).

Case Discussion

90% of aneurysms arise from the anterior circulation. 
Cerebral digital subtraction angiography (DSA) is the gold standard study. The 3D reconstructions can visualize the exact location of the aneurysm neck, shape, and the possible incorporation of vessels into the aneurysm. 

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