title: Unusual retrorectal lesion.
abstract: Retrorectal lesions are rare entities. We report the complete clinicopathological details of an unusual retrorectal lesion composed of low-grade endometrioid adenocarcinoma and propose that this is a malignant change in pluripotent cells arising within a long-standing retrorectal tailgut lesion. To the best of our knowledge, this is the first case report of this malignancy in a retrorectal tailgut cyst.
authors.affiliation: Department of Pathology, College of Medicine, University of Saskatchewan, Room 2868, G Wing, Royal University Hospital, Saskatoon, Saskatchewan S7N 0W8, Canada. inarkanth@shaw.ca
authors.forename: Selliah C
authors.initials: SC
authors.lastname: Kanthan
authors.forename: Rani
authors.initials: R
authors.lastname: Kanthan
mesh_terms: D000368:Aged; D018269:Carcinoma, Endometrioid / Q000175:diagnosis* / Q000601:surgery; D005260:Female; D006801:Humans; D010386:Pelvic Neoplasms / Q000175:diagnosis* / Q000601:surgery; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000601:surgery; D013514:Surgical Procedures, Operative / Q000379:methods; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome