title: A neonate with an anomalous bone attached to the cervical spine.
abstract: BACKGROUND
  A digit/rib-like ectopic bone is a rare congenital anomaly that is most commonly seen in the thorax or pelvis. There is a single report of an adult possessing a phalanx-like bone in the cervical region; however, whether the abnormal bone was congenital or acquired remains elusive.
  
  
  OBJECTIVE
  To elucidate that a phalanx-like bone in the cervical region represents a congenital anomaly.
  
  
  METHODS
  Case report.
  
  
  METHODS
  Report of the imaging findings in a neonate with a palpable bone projection in the posterior neck.
  
  
  RESULTS
  Plain radiographs demonstrated an ectopic bone posterior to the spinous process of the C5 vertebra. Three-dimensional computed tomography demonstrated that the anomalous bone was attached to the left lamina of the C5 vertebra and that there was abnormal segmentation of the left side of the cervical spine.
  
  
  CONCLUSIONS
  The anomalous bone in the neck is a congenital malformation that is accompanied by the maldevelopment of the cervical spine.
authors.affiliation: Department of Pediatrics, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8666, Japan. nakano-yt@tulip.sannet.ne.jp
authors.forename: Yuya
authors.initials: Y
authors.lastname: Nakano
authors.forename: Madoka
authors.initials: M
authors.lastname: Aizawa
authors.forename: Yuko
authors.initials: Y
authors.lastname: Kako
authors.forename: Katsumi
authors.initials: K
authors.lastname: Mizuno
authors.forename: Kazuo
authors.initials: K
authors.lastname: Itabashi
authors.forename: Gen
authors.initials: G
authors.lastname: Nishimura
mesh_terms: D002574:Cervical Vertebrae / Q000002:abnormalities* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011859:Radiography
keywords: Cervical region; Neonate; Pelvic digit; Pelvic rib