title: [Presacral tumor as a differential diagnosis of recurrent pilonidal sinus].
abstract: BACKGROUND
  Retrorectal or presacral space is occupied during embryological stem cell development and therefore may contain a heterogeneous group of tumors.
  
  
  METHODS
  We report the case of a 22-year-old male with a pilonidal cyst operated due to recurrent pilonidal sinus cyst. Final diagnosis after pelvic computed tomography is large retrorectal cystic tumor and magnetic resonance diagnosis of a presacral cystic compatible wtih germ cell tumor. The tumor was removed surgically through the abdomen and diagnosis of cystic teratoma was established.
  
  
  CONCLUSIONS
  Retrorectal tumors are rare lesions whose presence must be ruled out in case of recurrent sinus.
authors.affiliation: Servicio Cirugía General y del Aparato Digestivo, Hospital Universitario José María Morales Meseguer, Murcia. Spain. mmengual@msn.com.
authors.forename: Mónica
authors.initials: M
authors.lastname: Mengual-Ballester
authors.affiliation: Servicio Cirugía General y del Aparato Digestivo, Hospital Universitario José María Morales Meseguer, Murcia. Spain.
authors.forename: Enrique
authors.initials: E
authors.lastname: Pellicer-Franco
authors.affiliation: Servicio Cirugía General y del Aparato Digestivo, Hospital Universitario José María Morales Meseguer, Murcia. Spain.
authors.forename: Graciela
authors.initials: G
authors.lastname: Valero-Navarro
authors.affiliation: Servicio de Anatomía Patológica, Hospital Universitario José María Morales Meseguer, Murcia. Spain.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Alcaraz-Mateos
authors.affiliation: Servicio Cirugía General y del Aparato Digestivo, Hospital Universitario José María Morales Meseguer, Murcia. Spain.
authors.forename: Victoriano
authors.initials: V
authors.lastname: Soria-Aledo
authors.affiliation: Servicio Cirugía General y del Aparato Digestivo, Hospital Universitario José María Morales Meseguer, Murcia. Spain.
authors.forename: José Luis
authors.initials: JL
authors.lastname: Aguayo-Albasini
mesh_terms: D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D010386:Pelvic Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D010864:Pilonidal Sinus / Q000209:etiology* / Q000601:surgery; D012008:Recurrence; D013530:Surgical Wound Infection / Q000209:etiology; D013724:Teratoma / Q000150:complications / Q000175:diagnosis* / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed; D047368:Tumor Burden; D055815:Young Adult
keywords: Cystic teratoma; presacral tumor; retrorectal tumor; teratoma quístico; tumor presacro; tumor retrorrectal