Prognosis for Canine Malignant Mammary Tumors Based on TNM and Histologic Classification.

• DOI: 10.1292/jvms.58.11_1079
• Publication Date: 2011-08-16T06:10:01Z
• Authors: Tetsushi YAMAGAMI; Tetsuya KOBAYASHI; Kimimasa TAKAHASHI; Masahiro SUGIYAMA
• Keywords: Lymphovascular invasion; Distant metastasis; Vascular invasion

The 2-year prognosis of malignant mammary tumors seen in 175 bitches the Tokyo metropolitan area was assessed based on their TNM clinical staging and histological classification. larger tumor size became (T category), poorer prognosis. survival rates animals with regional lymph node metastasis cells (N1, N2 category) and/or distant (M1 were markedly lower than those without such involvement. As grade increased, poorer, however, there no significant differences among subtypes adenocarcinomas (tubular, papillary cystic) determined by WHO It also noticed that having carcinomas tubular formation or myoepithelial cell proliferation had a rate characteristics; invasive into adjacent skin lymphatic/vascular vessels implied non-invasive ones. results suggest combined practice system our evaluation above-mentioned 4 histologic features could be useful for prognostic determination canine cancers.