Influence of ovariectomy at the time of mastectomy on the prognosis for canine malignant mammary tumours.
The two-year prognosis for malignant mammary tumours seen in 175 bitches in the Tokyo metropolitan area was assessed based on the extent of mastectomy and on whether an ovariectomy was carried out at the time of mastectomy. The prognosis for the bitches was not influenced by the excision size of the affected mammary glands. Ovariectomy had no effect on the two-year survival rate of the dogs that underwent the tumour excision. There was no significant difference in the two-year survival rate between the dogs ovariectomised prior to mastectomy and those ovariectomised at the time of mastectomy. These results suggest that ovariectomy at the time of mastectomy has no effect on the prognosis in dogs with established neoplasms of the mammary gland.
Yamagami
T
T
Department of Veterinary Pathology, Nippon Veterinary and Animal Science University, Tokyo, Japan.
Kobayashi
T
T
Takahashi
K
K
Sugiyama
M
M
D000818:Animals; D004283:Dog Diseases / Q000175:diagnosis* / Q000453:epidemiology / Q000601:surgery*; D004285:Dogs; D005260:Female; D007564:Japan / Q000453:epidemiology; D015674:Mammary Neoplasms, Animal / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery*; D008408:Mastectomy / Q000592:standards / Q000662:veterinary*; D010051:Ovarian Neoplasms / Q000517:prevention & control / Q000556:secondary / Q000662:veterinary; D010052:Ovariectomy / Q000592:standards / Q000662:veterinary*; D011379:Prognosis; D015996:Survival Rate