title: Unusual extraperitoneal lesion of the pelvis: cloacal cyst with transitional cell carcinoma.
abstract: An unusual cystic tumor of retrovesical space was reported. After puzzling speculation on its histogenesis this extremely rare tumor was concluded to be a cloacal cyst with transitional cell carcinoma. Review of the literature revealed no similar case.
mesh_terms: D002295:Carcinoma, Transitional Cell / Q000175:diagnosis / Q000473:pathology*; D003560:Cysts / Q000175:diagnosis / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010386:Pelvic Neoplasms / Q000175:diagnosis / Q000473:pathology*