title: Triple lumbar dermal sinuses: unusual presentation of a typically solitary midline lesion.
abstract: BACKGROUND
  Congenital dermal sinus is a type of closed spinal dysraphism caused by incomplete disjunction. The lesion occurs everywhere along neuraxis predominantly as a solitary midline sinus in the lumbosacral area.
  
  
  METHODS
  The authors report on a 10-month-old girl with triple congenital dermal sinuses associated with dermoid tumors and intradural extension of one of them.
  
  
  CONCLUSIONS
  Triple dermal sinuses of the lumbosacral area in a single patient have never been described previously. Incomplete disjunction is suggested to cause this abnormality thereafter the orifice may be divided to three sinuses and some mesenchymal tissues separated the two proximal sinuses to a paramedian location.
authors.affiliation: Department of Neurosurgery, Children's Hospital Medical Center, Tehran University of Medical Science, Tehran, Iran.
authors.forename: Saeed
authors.initials: S
authors.lastname: Ansari
authors.forename: Yasir
authors.initials: Y
authors.lastname: Andrabi
authors.forename: Mostafa
authors.initials: M
authors.lastname: El Khashab
authors.forename: Farzad
authors.initials: F
authors.lastname: Bateni
authors.forename: Majid
authors.initials: M
authors.lastname: Dadmehr
authors.forename: Bermans J
authors.initials: BJ
authors.lastname: Iskandar
authors.forename: Farideh
authors.initials: F
authors.lastname: Nejat
mesh_terms: D005260:Female; D006801:Humans; D007223:Infant; D008161:Lumbosacral Region / Q000473:pathology* / Q000601:surgery*; D016136:Spina Bifida Occulta / Q000175:diagnosis* / Q000601:surgery*