title: Anorectal malignant melanoma in a patient presenting with prolapsing hemorrhoids.
authors.affiliation: Division of Gastroenterology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
authors.forename: Zachary
authors.initials: Z
authors.lastname: Bordman
authors.affiliation: Division of Gastroenterology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
authors.forename: Elliott
authors.initials: E
authors.lastname: Cohen
authors.affiliation: Department of Anatomic Pathology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
authors.forename: Eugene
authors.initials: E
authors.lastname: Hsieh
authors.affiliation: Division of Gastroenterology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
authors.forename: Lawrence B
authors.initials: LB
authors.lastname: Cohen
mesh_terms: D000368:Aged; D001005:Anus Neoplasms / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006484:Hemorrhoids / Q000175:diagnosis*; D006801:Humans; D008545:Melanoma / Q000175:diagnosis*; D012004:Rectal Neoplasms / Q000175:diagnosis*