title: Malignant ovarian teratoma in a red-eared slider (Trachemys scripta elegans).
abstract: A 7-year-old intact female red-eared slider (Trachemys scripta elegans) presented with anorexia of 2-3-weeks duration. Coelomic radiographs demonstrated 3 shelled eggs in the right cavity. Hormone therapy failed to induce oviposition. Exploratory laparotomy revealed 3 calcified eggs in the right oviduct and a large mass obliterating the left ovary. The large, multilobulate mass had scattered, firm, white nodules and weighed 450 g. Histopathology revealed a malignant teratoma composed of immature embryonaland extraembryonal elements derived from all 3 germ layers with multifocal epithelial anaplasia. This is the first report of a teratoma in chelonian gonadal tissue. Teratomas and reptilian gonadal neoplasia are reviewed.
authors.affiliation: Department of Pathology, Animal Medical Center, 510 East 62nd Street, New York, NY 10021-8314, USA.
authors.forename: Shelley J
authors.initials: SJ
authors.lastname: Newman
authors.forename: Cyndi J
authors.initials: CJ
authors.lastname: Brown
authors.forename: Amiya K
authors.initials: AK
authors.lastname: Patnaik
mesh_terms: D000818:Animals; D005260:Female; D010051:Ovarian Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery / Q000662:veterinary*; D010053:Ovary / Q000473:pathology / Q000601:surgery; D013724:Teratoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery / Q000662:veterinary*; D014426:Turtles