Journal of Animal Clinical Medicine
Online ISSN : 1881-1574
Print ISSN : 1344-6991
ISSN-L : 1344-6991
Original Article
Effects of Ovariohysterectomy on Prognosis in Dogs with Mammary Tumor
Shizu HASHIMOTOHozumi YAMAMURATsuneo SATOKiichi KANAYAMATakeo SAKAI
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JOURNAL FREE ACCESS

2003 Volume 12 Issue 1 Pages 1-4

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Abstract

The data from 198 dogs with mammary tumor brought to a general veterinary hospital in 1996 were collected and statistically analyzed to evaluate the effects of ovariohysterectomy on prognosis in dogs with mammary tumor. The dogs were divided into four groups : a group of 165 dogs from which the ovaries and uterus were both excised including the mammary tumor, a control group of 19 dogs from which only the mammary tumor was excised, and two other minor groups. The frequency of re-operation at the same site and postoperative survival rate tended to be lower in the group of the dogs which underwent ovariohysterectomy (Group II; 21.2%) than in the control group (Group I; 26.3%). The occurrence rate of histological changes between the first and second surgical operations also tended to be lower in Group II than Group I. The survival rate was significantly higher in Group II than Group I. These findings strongly suggested that simultaneous excision of the ovaries and uterus with excision of mammary tumor lessens both the recurrence of mammary tumor and postoperative histological changes, which means that this procedure enables dogs to survive longer.

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© 2003 Japanese Society of Clinical Veterinary Medicine
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