title: Superior rectal artery origin from the median sacral artery--angiographic appearance, developmental anatomy, and clinical implications.
abstract: Two angiographic observations of significant rectal vascularization by branches originating from the median sacral artery (MSA) are reported. In the first case, the MSA provided a complete superior rectal trunk, with left and right branches, while in the second, the MSA only contributed superior rectal branches to the right side of the rectum, the left side being supplied by left internal iliac branches. The angiographic appearance, developmental anatomy, and clinical significance of these variants are discussed.
authors.affiliation: Division of Interventional Neuroradiology, The Johns Hopkins Hospital, Baltimore, Maryland.
authors.forename: Monica S
authors.initials: MS
authors.lastname: Pearl
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Gest
authors.forename: Philippe
authors.initials: P
authors.lastname: Gailloud
mesh_terms: D000328:Adult; D063405:Anatomic Variation; D000792:Angiography; D001158:Arteries / Q000196:embryology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012007:Rectum / Q000098:blood supply*
keywords: anatomic variation; anatomy; angiography; embolization; rectal vascularization