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A1 segment hypoplasia

Case contributed by Dr Raad Al Tahat

Presentation

Headache.

Patient Data

Age: 40 years
Gender: Female
MRI

Hypoplastic A1 segment of right anterior cerebral artery.

Case Discussion

A1 segment hypoplasia of ACA is uncommon variant, which may increase the risk of ischemia in patients with thromboembolic disease due to reduction in collateral supply.

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