RT Journal Article SR Electronic T1 Duplicated odontoid process: plain radiographic and CT appearance of a rare congenital anomaly of the cervical spine. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1719 OP 1720 VO 18 IS 9 A1 Garant, M A1 Oudjhane, K A1 Sinsky, A A1 O'Gorman, A M YR 1997 UL http://www.ajnr.org/content/18/9/1719.abstract AB We describe a duplication of the odontoid process in a 6-year-old patient that included a partially fused midline ossicle on the anterior arch of C-1, fusion of the anterior lip of the foramen magnum and the arch of C-1, and an incomplete bony posterior arch of C-1.