title: Internal carotid artery agenesis associated with a rare collateral pathway: supraclinoid-supraclinoid anastomosis. A case report.
abstract: Internal carotid artery (ICA) agenesis is an infrequent vascular anomaly, less than 0.01% of the population. Here we report a case of internal carotid agenesis with a rare collateral pathway, via supraclinoid ICA anastomosis to the contralateral supraclinoid ICA.
authors.affiliation: Department of Radiology, Keimyung University School of Medicine, Dongsan Medical Center, 56 Dalseong-ro, Jung-gu, Daegu, 700-712, Korea.
authors.forename: Jung Hee
authors.initials: JH
authors.lastname: Hong
authors.affiliation: Department of Radiology, Keimyung University School of Medicine, Dongsan Medical Center, 56 Dalseong-ro, Jung-gu, Daegu, 700-712, Korea. hyukwonchang@korea.com.
authors.forename: Hyuk Won
authors.initials: HW
authors.lastname: Chang
authors.affiliation: Department of Internal Medicine, Keimyung University School of Medicine, Dongsan Medical Center, Daegu, Korea.
authors.forename: Ji Min
authors.initials: JM
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, Keimyung University School of Medicine, Dongsan Medical Center, Daegu, Korea.
authors.forename: Ho Chan
authors.initials: HC
authors.lastname: Cho
authors.affiliation: Department of Internal Medicine, Keimyung University School of Medicine, Dongsan Medical Center, Daegu, Korea.
authors.forename: Sang Hyon
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Department of Anesthesiology and Pain Medicine, Keimyung University School of Medicine, Dongsan Medical Center, Daegu, Korea.
authors.forename: Ji Hee
authors.initials: JH
authors.lastname: Hong
authors.affiliation: Department of Emergency Medicine, Keimyung University School of Medicine, Dongsan Medical Center, Daegu, Korea.
authors.forename: Sung Jin
authors.initials: SJ
authors.lastname: Kim
authors.affiliation: Department of Diagnostic Radiology, Busan Paik Hospital Inje University, Busan, Korea.
authors.forename: Hea Woong
authors.initials: HW
authors.lastname: Jeong
mesh_terms: D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis*; D063405:Anatomic Variation; D001921:Brain / Q000098:blood supply* / Q000000981:diagnostic imaging; D002343:Carotid Artery, Internal / Q000002:abnormalities* / Q000000981:diagnostic imaging; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male
keywords: Agenesis; Internal carotid artery; Magnetic resonance angiography; Supracavernous; Vascular anomaly