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Clinicopathological Survey of 101 Canine Mammary Gland Tumors: Differences between Small-Breed Dogs and Others

2005; Japanese Society of Veterinary Science; Volume: 67; Issue: 3 Linguagem: Inglês

10.1292/jvms.67.345

1347-7439

Teruo Itoh, Kazuyuki Uchida, Kenichi L. Ishikawa, Kiyotaka Kushima, Eiko Kushima, Hiroyoshi TAMADA, Takashi Moritake, Hiroyuki Nakao, Hiroki SHII,

Infectious Diseases and Mycology

Clinicopathological features of mammary gland tumors (MGTs) in 101 dogs were evaluated retrospectively. The incidence of histological malignancy in 60 small- and 41 other-breed dogs were 25% and 58.5%, respectively. In 82 epithelial MGTs, small-sized tumors (< 3 cm) or non-invasive tumors were predominant in small breeds. In multivariate survival analysis, small breed (p=0.048) and lower stage of tumor cell invasion (p=0.006) were significantly associated with longer survival time. These results suggest that the incidence of histological or biological malignancy in MGTs is lower in small-breed dogs than in others.