Abstract: After clinical examination，blood routine and blood biochemical examination，abdominal ultrasound and chest X ? ray examination of a 6 ? year ? old non neutered female poodle with unilateral multiple breast mass，a unilateral total mastectomy was performed for the dog，and the tumor and related lymph nodes were examined by pathological section. It was diagnosed as malignant mixed tumer. This paper summarizes this disease in order to provide some reference for the clinical diagnosis and treatment of breast tumors.

Key words: Breast tumor； Total mastectomy； Pathological section； Malignancy

摘要： 对一例单侧乳腺多发性团块的6岁未绝育的贵宾母犬进行临床检查、血常规和血液 生化检查、腹部超声以及胸片检查后，为该犬实施了单侧乳腺全切术，并对术中切除的肿物及 相关淋巴结进行了病理切片检查；诊为恶性混合瘤。本文对该进行了总结，以期为乳腺肿瘤的 临床诊治提供一定的参考。

关键词: 乳腺肿瘤； 乳腺全切术； 病理切片； 恶性