Bilateral hypoplasia of the internal carotid arteries.

Bilateral hypoplasia of the internal carotid arteries is a rare congenital anomaly. We present the case of a 62-year-old man with this rare condition. The findings from the plain computed tomography and computed tomography angiogram are described in this report. The common collateral pathways associated with bilateral hypoplasia of the internal carotid arteries, the clinical presentation and clinical significance of this condition are also discussed.