Congenital anomaly of the peripheral vascular system, unspecified site [747.60], Reason for Study: ^Reason: 5 yo with PHACE syndrome, possible internal carotid artery aneurysm, follow up study History: Visual disturbance 3D time of flight MOTSA MRA brain images with maximum intensity projections of the anterior/posterior intracranial circulation demonstrate normal ICAs, MCAs and ACAs. Vertebrobasilar system appears to be normal.The left distal ICA as well as the left ACA A1 segment appear to be slightly ectatic and the right ACA A1 segment is hypoplastic. Since the Acom artery is patent, the right ACA A2 segment is supplied by the left side. There is no evidence of intracranial arterial aneurysm.There is no evidence of arterial luminal stenosis.Bilateral Pcom arteries are patent.
No evidence of intracranial arterial aneurysm.The left distal ICA and left ACA A1 segment appear to ectatic with hypoplastic right ACA A1 segment. Otherwise unremarkable. 