title: Leiomyosarcoma of the rectum: report of two cases.
mesh_terms: D000368:Aged; D003110:Colonic Neoplasms / Q000453:epidemiology; D003452:Cryosurgery; D003937:Diagnosis, Differential; D006801:Humans; D007414:Intestinal Neoplasms / Q000453:epidemiology; D007421:Intestine, Small; D007889:Leiomyoma / Q000175:diagnosis; D007890:Leiomyosarcoma / Q000175:diagnosis / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D008297:Male; D011379:Prognosis; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000453:epidemiology / Q000473:pathology; D012737:Sex Factors; D013274:Stomach Neoplasms / Q000453:epidemiology