Seminoma in a southern black rhinoceros (Diceros bicornis minor): diagnosis, surgical management and effect on fertility.
A testicular mass was identified by ultrasonography performed during a routine reproductive evaluation of an adult male southern black rhinoceros (Diceros bicornis minor). Histological examination of a testicular biopsy supported a presumptive diagnosis of testicular neoplasia. Hemi-castration was performed to excise the affected testis and a pathological diagnosis of a seminoma was made. Assessment of semen suggested reduced fertility as a consequence of the neoplastic process, but hemi-castration prevented further growth and metastasis of the tumour and ensured the animal's breeding potential. This is the second documented case of a seminoma in a rhinoceros species and the first case in a black rhinoceros.
Portas
T J
TJ
Taronga Western Plains Zoo, Dubbo, New South Wales, Australia. timp@wildlifewarriors.org.au
Hildebrandt
T B
TB
Bryant
B R
BR
Göritz
F
F
Hermes
R
R
D000818:Animals; D000835:Animals, Wild; D005298:Fertility; D008297:Male; D009919:Orchiectomy / Q000662:veterinary; D010527:Perissodactyla; D018239:Seminoma / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery / Q000662:veterinary*; D013736:Testicular Neoplasms / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery / Q000662:veterinary*