title: A study of the relationship between syringoceles and Cobb's collar.
abstract: OBJECTIVE
  To assess the association between the congenital narrowing of the bulbar urethra and syringoceles.
  
  
  METHODS
  Eleven boys were investigated, 10 with a cystogram and 9 with video endoscopy. The video tapes were reviewed with the radiology and the relationship between the syringocele and the narrowing of the bulbar urethra (Cobb's collar) was particularly noted.
  
  
  RESULTS
  Seven of the 9 boys examined endoscopically were found to have a Cobb's collar near the proximal extent of the syringocele; the proximal extent of external sphincter appeared to be above and separate from the syringocele in all cases. Six of 10 patients had a syringocele and bulbar urethral narrowing seen at cystogram.
  
  
  CONCLUSIONS
  It would appear that syringoceles are often associated with a Cobb's collar, in keeping with the possible origin of both structures from the region of the urogenital membrane. The narrowing in the bulbar urethra may, however, be an incidental finding in many of the cases.
authors.affiliation: Urology Unit, Women's and Children's Hospital, South Australia.
authors.forename: P A
authors.initials: PA
authors.lastname: Dewan
mesh_terms: D000293:Adolescent; D002030:Bulbourethral Glands / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D003558:Cystoscopy; D003937:Diagnosis, Differential; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008591:Meningomyelocele / Q000000981:diagnostic imaging / Q000473:pathology*; D014525:Urethral Stricture / Q000000981:diagnostic imaging / Q000473:pathology*; D014567:Urography