A Case of Adenocarcinoma of the Endometrium Extending into the Leiomyoma of the Uterus in a Rabbit

Journal of Veterinary Medical Science

Minoru TSUCHITANI²  Takashi KITAMORI¹  Fumiyo KITAMORI¹  Hiroko KOKOSHIMA²  Tetsuro KUROTAKI² 

[1]Kitamori Animal Hospital

[2]Mitsubishi Chemical Safety Institute Ltd.

关键词: adenocarcinoma;    leiomyoma;    rabbit;   

DOI  :  10.1292/jvms.69.981

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(15)Cited-By(3)In a pet rabbit, 2 tumor masses one on each horn were macroscopically seen in the wall of the uterus. On light microscopic examination, the right horn mass consisted of an admixture of neoplastic epithelial and mesenchymal element. The epithelial element was composed of neoplastic epithelial cells with numerous mitotic figures and formed varied sizes of acini, glandular, and solid structures. The tumor was diagnosed as an adenocarcinoma of the endometrium. The mesenchymal element was composed of well-differentiated smooth muscle cells and was diagnosed as a leiomyoma. While adenocarcinoma cells formed a protrusive mass in the uterine lumen, they also showed an extension into the leiomyoma of the myometrium. By immunohistochemistry, adenocarcinoma stained positive for cytokeratin (MNF116) and leiomyoma stained positive for smooth muscle actin, showing a substantial difference in the cytological nature of these tumor cells. The results may give a further evidence supporting the narrative of the tumor development that an adenocarcinoma of the endometrium extended into leiomyoma of the uterus. To the author's knowledge, this is the first report describing this type of combination of two independent tumors in a pet rabbit.

【 授权许可】

Unknown