title: Ultrasonographic diagnosis of non-palpable Sertoli cell tumours in infertile dogs.
abstract: Three previously fertile dogs were examined with a history of recent infertility. Semen evaluation revealed marked spermatozoal abnormalities, including lesions of the mid-piece region, poor spermatozoal motility and a low total spermatozoal output. The mean number of live normal spermatozoa was 21.1 +/- 17.4 x 10(6) spermatozoa. Examination of the testes with diagnostic B-mode ultrasound demonstrated solitary mass lesions which in each case were not palpable. Plasma oestrogen concentrations were elevated (mean, 43.0 +/- 8.5 pg/ml), and histologically the masses were shown to be Sertoli cell tumours. Several months after unilateral orchidectomy there was an increase in the percentage of normal spermatozoa and an increase in the spermatozoal motility and total spermatozoal output. The mean number of live normal spermatozoa was 149.8 +/- 22.9 x 10(6) spermatozoa and all the dogs subsequently returned to fertility. Ultrasonographic examination of the testes should be considered part of the routine investigation of the male reproductive tract.
authors.affiliation: Department of Farm Animal and Equine Medicine and Surgery, Royal Veterinary College, North Mymms, Hatfield, Hertfordshire.
authors.forename: G C
authors.initials: GC
authors.lastname: England
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D004285:Dogs; D004967:Estrogens / Q000097:blood; D007248:Infertility, Male / Q000209:etiology / Q000662:veterinary*; D008297:Male; D012707:Sertoli Cell Tumor / Q000150:complications / Q000000981:diagnostic imaging / Q000662:veterinary*; D013076:Sperm Count / Q000662:veterinary; D013081:Sperm Motility / Q000502:physiology; D013094:Spermatozoa / Q000473:pathology / Q000502:physiology; D013736:Testicular Neoplasms / Q000150:complications / Q000000981:diagnostic imaging / Q000662:veterinary*; D013737:Testis / Q000000981:diagnostic imaging / Q000473:pathology; D014463:Ultrasonography
chemical_list: D004967:Estrogens