Congenital anomaly of combined atlas-odontoid process fusion and bipartite atlas.
Congenital fusion of the atlas with the odontoid process of the axis is a very rare condition caused by a segmental defect of the first cervical somite. Only 9 such cases have been reported in the literature to date. The bipartite atlas, another well-documented rare anomaly, has been observed in only 0.1% of the general population. We describe the first case of a 70-year-old male with both of these complex congenital anomalies.
Department of Radiology, Veterans Health Service Medical Center, 52, Jinhwangdoro 61-gil, Gangdong-gu, Seoul, 134-791, Korea.
Jea Ryoung
JR
Gil
Department of Radiology, Veterans Health Service Medical Center, 52, Jinhwangdoro 61-gil, Gangdong-gu, Seoul, 134-791, Korea. drwtkim@gmail.com.
Wan Tae
WT
Kim
Department of Radiology, Veterans Health Service Medical Center, 52, Jinhwangdoro 61-gil, Gangdong-gu, Seoul, 134-791, Korea.
Min Jeong
MJ
Seo
D000368:Aged; D001270:Cervical Atlas / Q000002:abnormalities*; D006801:Humans; D008297:Male; D009809:Odontoid Process / Q000002:abnormalities*; D013122:Spinal Diseases / Q000151:congenital* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed
Atlanto-axial joint; Bipartite atlas; Cervical atlas; Congenital abnormalities; Odontoid process