title: Anomalous External Carotid Artery-Internal Carotid Artery Anastomosis in Two Patients with Proximal Internal Carotid Arterial Remnants.
abstract: Two angiographic instances of anomalous external carotid artery (ECA) and internal carotid artery (ICA) anastomosis are described, each occurring at the C2-3 level and bearing remnants of proximal ICA. The ICA remnant of one patient (identifiable immediately upon bifurcation of the common carotid artery) was hypoplastic, and that of the other patient was an occluded arterial stump. These features are not typical of non-bifurcating ICA. The occipital artery originated from an anomalous connection in one instance and from the main trunk of the ECA (just past the ECA-ICA connection) in the other.
authors.affiliation: Department of Neurology, Stroke Center, Myongji Hospital, Goyang 412-270, Korea.
authors.forename: Chang Hun
authors.initials: CH
authors.lastname: Kim
authors.affiliation: Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 110-744, Korea.
authors.forename: Young Dae
authors.initials: YD
authors.lastname: Cho
authors.affiliation: Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 110-744, Korea.
authors.forename: Hyun-Seung
authors.initials: HS
authors.lastname: Kang
authors.affiliation: Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 110-744, Korea.
authors.forename: Jeong Eun
authors.initials: JE
authors.lastname: Kim
authors.affiliation: Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, Korea.
authors.forename: Seung Chai
authors.initials: SC
authors.lastname: Jung
authors.affiliation: Department of Neurosurgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang 431-796, Korea.
authors.forename: Jun Hyong
authors.initials: JH
authors.lastname: Ahn
authors.affiliation: Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 110-744, Korea. ; Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 110-744, Korea.
authors.forename: Moon Hee
authors.initials: MH
authors.lastname: Han
mesh_terms: D000328:Adult; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging; D002342:Carotid Artery, External / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D002343:Carotid Artery, Internal / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D002533:Cerebral Angiography; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000601:surgery; D008297:Male; D008875:Middle Aged
keywords: Anatomical variation; Anomalous anastomosis; Non-bifurcating carotid artery