[Cancer of the mammary gland in a tigress]

Mammary gland carcinoma in a 14-year-old female tiger kept in the Moscow Zoo for a long time is described. At autopsy, the outgrowth of the tumor into the surrounding tissue and metastases into the internal organs were found. The tumor was defined as a ductal papillary solid carcinoma with intraductal central necrosis that resembled the comedo type of human mammary gland carcinoma. Rapid growth of the tumor, the prevalence of necrosis, and numerous metastases to the lungs, liver, and lymph nodes were noted.