title: Coexistence of left internal carotid agenesis, klippel-feil syndrome and postaxial polydactyly.
abstract: BACKGROUND
  Internal carotid artery agenesis is a rare anomaly that can be clinically asymptomatic. Klippel-Feil syndrome is a skeletal malformation characterized by vertebral fusion. Presence of postaxial polydactyly is suggestive of an underlying syndrome.
  
  
  METHODS
  We report a rare case of a 44-year-old patient with non-specific symptoms and an association between these three rare abnormalities. Vascular anomalies were found using intracranial MR angiography and multi-detector CT angiography of the supraaortic arteries.
  
  
  CONCLUSIONS
  Presence of a single aforementioned anomaly requires cautious imaging assessment in order to detect possible associated anomalies and avoid diagnostic pitfalls. A possible common genetic background could explain the coexistence of these three anomalies.
authors: Department of Radiology, Clinical Hospital Center Rijeka, Rijeka, Croatia.
authors: Antonija
authors: A
authors: Ruzic-Barsic
authors: Department of Radiology, Clinical Hospital Center Rijeka, Rijeka, Croatia.
authors: Slavica
authors: S
authors: Kovacic
authors: Department of Neurology, Istrian Health Center of Umag, Umag, Croatia.
authors: Dragana
authors: D
authors: Mijatovic
authors: Department of Radiology, Clinical Hospital Center Rijeka, Rijeka, Croatia.
authors: Damir
authors: D
authors: Miletic
authors: Department of Radiology, Clinical Hospital Center Rijeka, Rijeka, Croatia.
authors: Ronald
authors: R
authors: Antulov
keywords: Angiography; Carotid Artery, Internal; Klippel-Feil Syndrome; Polydactyly