title: [Mucinous adenocarcinoma of the anal region. Study of 4 cases].
abstract: OBJECTIVE
  We report 4 cases of a special anal tumor featuring a long history of inflammatory signs and fistulas in that area.
  
  
  METHODS
  A retrospective study from the histologic diagnosis back to the first symptom and up to the last follow-up or death.
  
  
  METHODS
  We studied all patients with a histologic diagnosis of mucinous adenocarcinoma of the anus admitted to our hospital.
  
  
  RESULTS
  All of them showed a long history of anal inflammatory signs and/or fistula before diagnosis. In all cases, the tumors were mucinous adenocarcinomas with minimal cytologic atypia. Of the 4 patients, one is dead, and we have lost the follow-up of another one 13 months after surgery when he had no evidence of recurrence.
  
  
  CONCLUSIONS
  In every patient with a long-standing anal fistula or a recurrent anal abscess, a biopsy is mandatory to rule out an underlying low grade mucinous carcinoma and if it shows a low grade mucinous adenocarcinoma, the treatment of choice will be local resection if it is available. If not, an abdominal perineal resection showed be done without hesitation.
authors.affiliation: Servicio de Anatomía Patológica, Hospital Juan Canalejo, La Coruña.
authors.forename: F
authors.initials: F
authors.lastname: Sacristán
authors.forename: P
authors.initials: P
authors.lastname: Iglesias
authors.forename: J A
authors.initials: JA
authors.lastname: Ortiz
authors.forename: M
authors.initials: M
authors.lastname: Bouso
authors.forename: J
authors.initials: J
authors.lastname: Souto
authors.forename: F
authors.initials: F
authors.lastname: Arnal
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology / Q000601:surgery; D000328:Adult; D000368:Aged; D001003:Anal Canal / Q000473:pathology; D001005:Anus Neoplasms / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D012003:Rectal Fistula / Q000473:pathology
vernacular_title: Adenocarcinoma mucinoso de región anal. Estudio de 4 casos.