title: Duplicated origin of a radiculomedullary artery supplying a perimedullary arteriovenous fistula: angiographic observation and developmental considerations.
abstract: The angiographic observation of a radiculomedullary artery variation found in a patient with a spinal cord vascular malformation is presented. A posterior radiculomedullary artery arising from the left L2 intersegmental artery had a duplicated origin. Two radicular trunks were seen aiming towards the neural foramen: a dominant anterior one providing a retrocorporeal artery and the anterior limb of the radicular artery, and a smaller posterior one branching off a prelaminar artery and the posterior limb of the radicular artery. The two limbs then joined to continue as a single posterior radiculomedullary artery, which participated in the vascularization of the vascular malformation. The clinical and developmental aspects of this exceptional variant are discussed.
authors: Division of Interventional Neuroradiology, Department of Radiology, The Johns Hopkins Hospital, Bloomberg 7218, 1800 E Orleans Street, Baltimore, MD, 21287, USA, phg@jhmi.edu.
authors: Philippe
authors: P
authors: Gailloud
authors: Lydia
authors: L
authors: Gregg
authors: Zinovy
authors: Z
authors: Katz
authors: John S
authors: JS
authors: Myseros
authors: Monica S
authors: MS
authors: Pearl
mesh_terms: D001158:Arteries / Q000002:abnormalities* / Q000473:pathology; D001164:Arteriovenous Fistula / Q000473:pathology*; D002648:Child; D006801:Humans; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging; D008297:Male; D013116:Spinal Cord / Q000098:blood supply*