title: [Analysis of recurrence and prognosis after surgical resection for anorectal melanoma].
abstract: OBJECTIVE
  To investigate the clinicopathologic factors related with recurrence and prognosis after surgical resection for anorectal melanoma.
  
  
  METHODS
  The clinicopathologic factors related to recurrence and prognosis of 50 patients with anorectal melanoma after surgical resection were retrospectively analyzed using univariate and multivariate methods.
  
  
  RESULTS
  Forty-seven patients underwent radical operation, including 31 abdominoperineal resection (APR) and 16 sphincter preserving operation. The local recurrence rates were 16.1%(5/31) and 68.8%(11/16) respectively. chi(2) analysis revealed that operation pattern was associated with local recurrence rate. The 5-year survival rate was 18.2%. Univariate analysis revealed that single tumor, intramural infiltration and operation pattern were related with prognosis. Multivariate analysis revealed that intramural infiltration was the most important prognostic factor for anorectal melanoma.
  
  
  CONCLUSIONS
  The prognosis of anorectal melanoma is poor. Early diagnosis and treatment are important for the improving of curative effect.
authors.affiliation: Department of Abdominal Surgery, Cancer Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China. dbzhao2003@sina.com
authors.forename: Dong-Bing
authors.initials: DB
authors.lastname: Zhao
authors.forename: Yong-Kai
authors.initials: YK
authors.lastname: Wu
authors.forename: Yong-Fu
authors.initials: YF
authors.lastname: Shao
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008545:Melanoma / Q000473:pathology* / Q000601:surgery*; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D009367:Neoplasm Staging; D011379:Prognosis; D012004:Rectal Neoplasms / Q000473:pathology* / Q000601:surgery*; D012189:Retrospective Studies; D015996:Survival Rate