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

Teruo ITOH; Kazuyuki UCHIDA; Kenichi ISHIKAWA; Kiyotaka KUSHIMA; Eiko KUSHIMA; Hiroyoshi TAMADA; Takashi MORITAKE; Hiroyuki NAKAO; Hiroki SHII

doi:10.1292/jvms.67.345

NOTE

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

Teruo ITOH, Kazuyuki UCHIDA, Kenichi ISHIKAWA, Kiyotaka KUSHIMA, Eiko KUSHIMA, Hiroyoshi TAMADA, Takashi MORITAKE, Hiroyuki NAKAO, Hiroki SHII

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Keywords: canine, clinicopathological survey, mammary gland tumor

JOURNAL FREE ACCESS

2005 Volume 67 Issue 3 Pages 345-347

DOI https://doi.org/10.1292/jvms.67.345

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Abstract

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.

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