title: Missed diagnosis of syrinx.
abstract: METHODS
  Prospective, randomized, controlled human study.
  
  
  OBJECTIVE
  We checked the proportion of missed syrinx diagnoses among the examinees of the Korean military conscription.
  
  
  BACKGROUND
  A syrinx is a fluid-filled cavity within the spinal cord or brain stem and causes various neurological symptoms. A syrinx could easily be diagnosed by magnetic resonance image (MRI), but missed diagnoses seldom occur.
  
  
  METHODS
  In this study, we reviewed 103 cases using cervical images, cervical MRI, or whole spine sagittal MRI, and syrinxes was observed in 18 of these cases. A review of medical certificates or interviews was conducted, and the proportion of syrinx diagnoses was calculated.
  
  
  RESULTS
  The proportion of syrinx diagnoses was about 66.7% (12 cases among 18). Missed diagnoses were not the result of the length of the syrinx, but due to the type of image used for the initial diagnosis.
  
  
  CONCLUSIONS
  The missed diagnosis proportion of the syrinx is relatively high, therefore, a more careful imaging review is recommended.
authors.affiliation: Seoul Regional Military Manpower Administration, Seoul, Korea.
authors.forename: Chang Hyun
authors.initials: CH
authors.lastname: Oh
authors.forename: Chan Gyu
authors.initials: CG
authors.lastname: Kim
authors.forename: Jae-Hwan
authors.initials: JH
authors.lastname: Lee
authors.forename: Seung Hwan
authors.initials: SH
authors.lastname: Yoon
authors.forename: Hyeong-Chun
authors.initials: HC
authors.lastname: Park
authors.forename: Chong Oon
authors.initials: CO
authors.lastname: Park