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AJNR - American Journal of Neuroradiology

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Cutaneous Hemangiomas and Vascular Abnormalities: Persistence of Embryonic Vascularization

I. Pascual-Castroviejo^a, S.I. Pascual-Pascual^a and J. Delgado^b

^a Pediatric Neurology Service, University Hospital La Paz, Madrid, Spain
^b Neuroradiology Service, University Hospital Reina Sofia, Córdoba, Spain

View larger version (91K): [in this window] [in a new window]   Fig 1. A, MRA in the coronal view shows a voluminous hemangioma in the left neck and parotid, a thin left common carotid artery that ends in the hemangioma (black arrowhead), right common and internal carotid arteries, and a hypoplastic external carotid artery (white arrowhead). Both vertebral arteries show an embryonic state with persistence of cervical segmental arteries (small white arrowhead). Both anterior cerebral arteries arise from the right internal carotid artery. B and C, The left (LVA) and right (RVA) vertebral arteries arise from the subclavian arteries but present an embryonic appearance, with persistence of all the cervical segmental arteries (arrowheads).

View larger version (102K): [in this window] [in a new window]   Fig 2. MRA. A and B, Coronal and axial views show both anterior cerebral arteries arising from the right internal carotid artery (arrowhead) in a very lateralized position into the left hemicranial cavity and the left carotid artery, communicating with the basilar artery through a large posterior communicating artery (arrow). Only the intracranial part of the left internal carotid artery is visible (asterisk).