title: Anomalous origin of the callosomarginal artery from the A1 segment with an associated saccular aneurysm.
abstract: Although anatomic variations are well known in the A1 segment of the anterior cerebral artery (ACA), anomalous origin of a cortical artery from the A1 segment is extremely rare. The only reported cortical branch to arise from the A1 segment is the fronto-orbital artery. We report a case of anomalous origin of the callosomarginal artery (CMA) in association with a saccular aneurysm from the A1 segment of the left ACA in a 35-year-old man who presented with intracerebral hemorrhage. To our knowledge, this is the first report of anomalous origin of the CMA from the A1 segment.
authors.affiliation: Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India. b_krish1@yahoo.co.in
authors.forename: T
authors.initials: T
authors.lastname: Krishnamoorthy
authors.forename: A K
authors.initials: AK
authors.lastname: Gupta
authors.forename: R N
authors.initials: RN
authors.lastname: Bhattacharya
authors.forename: B J
authors.initials: BJ
authors.lastname: Rajesh
authors.forename: S
authors.initials: S
authors.lastname: Purkayastha
mesh_terms: D000328:Adult; D020771:Anterior Cerebral Artery / Q000002:abnormalities*; D002536:Cerebral Arteries / Q000002:abnormalities; D006801:Humans; D002532:Intracranial Aneurysm / Q000209:etiology*; D008297:Male