title: Teratoma in a feline unilateral cryptorchid testis.
abstract: A 14- x 12- x 6-cm (approximately 600 g) cryptorchid testis was surgically removed with the omentum from the posterior portion of the abdominal cavity of a 2-year-old male American Shorthair cat. At the time of a previous orchiectomy, a unilateral testis had been discovered in the scrotum. The cut surface of the cryptorchid testis consisted of solid areas with many cysts containing fluid and spongy soft areas. Histologically, the cryptorchid testis was composed of neuroectodermal components and diffuse immature glial tissues, cystic, tubular, and papillary epithelial tissues, and immature cartilaginous tissues. A metastatic mass in the omentum had histologic structures similar to those of the cryptorchid testis. The present case was diagnosed as teratoma in a feline unilateral cryptorchid testis.
authors.affiliation: Department of Veterinary Pathology, Faculty of Agriculture, Kagoshima University, Korimoto, Japan. miyoshi@vet.agri.kagoshima-u.ac.jp
authors.forename: N
authors.initials: N
authors.lastname: Miyoshi
authors.forename: N
authors.initials: N
authors.lastname: Yasuda
authors.forename: Y
authors.initials: Y
authors.lastname: Kamimura
authors.forename: M
authors.initials: M
authors.lastname: Shinozaki
authors.forename: T
authors.initials: T
authors.lastname: Shimizu
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000473:pathology* / Q000601:surgery; D002415:Cats; D003456:Cryptorchidism / Q000473:pathology / Q000601:surgery / Q000662:veterinary; D017809:Fatal Outcome; D007150:Immunohistochemistry / Q000662:veterinary; D008297:Male; D009852:Omentum / Q000473:pathology / Q000601:surgery; D010534:Peritoneal Neoplasms / Q000556:secondary / Q000601:surgery / Q000662:veterinary*; D013724:Teratoma / Q000473:pathology / Q000556:secondary / Q000601:surgery / Q000662:veterinary*; D013736:Testicular Neoplasms / Q000473:pathology / Q000601:surgery / Q000662:veterinary*