Concurrence of solid carcinoma and intraductal papillary carcinoma in a rabbit
2025
S. Shokrpoor | D. Ghaffari | M.S. Khanbabaii
In recent years mammary gland neoplasm has been recognized in pet and laboratory rabbits. The present study describes the concurrence of two malignant mammary gland neoplasms in a six-year-old intact female domestic rabbit. On clinical examination, the masses were observed in the left inguinal and right thoracic mammary glands. Based on owner information, the inguinal mammary gland mass within the previous 3-month period, and the thoracic mammary gland mass within the previous 6-month period, had become evident. Finally, complete surgical removal of the masses was selected. Tissue samples of the masses were fixed in 10% neutral buffered formalin and stained with H&E. In addition, immunohistochemical studies on masses sections were performed using primary antibodies against cytokeratins AE1/AE3. Microscopically, the left mass was diagnosed as solid carcinoma, and the right mass was diagnosed as intraductal papillary carcinoma. Immunohistochemistry showed diffuse positive cytoplasmic staining of the neoplastic cells in both of masses with primary antibodies against cytokeratins AE1/AE3. The best treatment option for mammary masses in pet rabbits is surgical excision, that is performed under general anesthesia. In this case, no new growth of the masses was observed 4 months following surgical procedures.
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