title: Use of ultrasonography to diagnose Sertoli cell neoplasia and cryptorchidism in a dog.
abstract: Unilateral cryptorchidism and Sertoli cell tumor in the descended testis were provisionally diagnosed by use of ultrasonography in a 7-year-old Keeshond. The left testis was thought to have degenerated, but ultrasonography of the scrotum did not reveal evidence of testicular or epididymal tissue. The contralateral testis contained a hypoechoic mass believed to be a testicular tumor. Surgery and histopathologic findings confirmed the diagnosis. Ultrasonography of the scrotum and its contents should be considered for use in animals with suspected testicular neoplasia and/or degeneration.
mesh_terms: D000818:Animals; D003456:Cryptorchidism / Q000175:diagnosis / Q000662:veterinary*; D004283:Dog Diseases / Q000175:diagnosis* / Q000601:surgery; D004285:Dogs; D008297:Male; D012707:Sertoli Cell Tumor / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D013736:Testicular Neoplasms / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D014463:Ultrasonography / Q000662:veterinary*