Pathohistological diagnosis of tubular solid carcinoma of the mammary gland in a cat
The article presents the results of histopathological diagnosis of tubular solid carcinoma of the mammary gland in a cat. The study was conducted on the basis of the clinic of the Faculty of Veterinary Medicine and Biotechnology of the Ulyanovsk State Agrarian University. Fragments of breast tumor tissue, chest wall and metastasis in the pleural cavity were studied. The subject of the study was a 14-year-old cat, a mestizo, kept at home. The collection of tissues, fixation of the material were carried out according to generally accepted methods. According to the results of the study, macroscopically, the neoplasm is represented by tumor nodes in the right milk bags with pronounced invasive growth and implantation metastasis into the pleural cavity. It was found that the tissue of the neoplasm is represented by tubular structures of irregular shape and, to a lesser extent, by areas of a solid structure with poorly differentiated cells with interlayers of the connective tissue stroma, which allows us to conclude that there is tissue atypism. The signs of cellular atypism were revealed. The data obtained make it possible to identify the neoplasm as infiltrating tubular solid carcinoma of the breast. A less differentiated structure of tumor tissue in metastases was revealed.