title: Implantation of rectal cancer cells in a fistula in ano: report of a case.
abstract: We report a case of implantation of tumor cells within a fistula in ano. A 36-year-old man with a 16-year history of an anal fistula underwent an operation for rectal carcinoma. Three weeks later, the anal fistula was resected. A histological examination of the specimen showed atypical cells; moreover, rectal carcinoma had proliferated in the granulation tissue lying underneath the intact squamous epithelium. Because there was no continuity to the rectal carcinoma or the anal glands, we diagnosed implantation of rectal cancer cells in a fistula in ano.
authors.affiliation: Department of Surgery, Kyouritsu General Hospital, Nagoya, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Shinohara
authors.forename: H
authors.initials: H
authors.lastname: Hara
authors.forename: Y
authors.initials: Y
authors.lastname: Kato
authors.forename: M
authors.initials: M
authors.lastname: Asano
authors.forename: Y
authors.initials: Y
authors.lastname: Nakazawa
authors.forename: T
authors.initials: T
authors.lastname: Kato
authors.forename: T
authors.initials: T
authors.lastname: Nogaki
authors.forename: Y
authors.initials: Y
authors.lastname: Yamashita
mesh_terms: D000230:Adenocarcinoma / Q000150:complications* / Q000601:surgery*; D000328:Adult; D003082:Colectomy / Q000009:adverse effects / Q000379:methods; D006801:Humans; D008297:Male; D009366:Neoplasm Seeding; D012003:Rectal Fistula / Q000150:complications* / Q000601:surgery; D012004:Rectal Neoplasms / Q000150:complications* / Q000601:surgery*; D016896:Treatment Outcome