Musser J M, Russell K E, Veatch J K, St-Jean G
Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.
Cornell Vet. 1993 Jan;83(1):83-8.
A squamous cell carcinoma located adjacent to the anus was diagnosed in a 15-year-old light colored Longhorn bull. The tumor restricted the anal orifice to a diameter of 3 cm. Upon histological evaluation, islands of squamous cells were present deep in the dermis and the submucosal connective tissue. It was not possible to determine whether the tumor originated from the perianal region or the anus. This is the first diagnosed and reported occurrence in North America of squamous cell carcinoma in the anal region of a bull.
在一头15岁的浅色长角公牛身上诊断出一例位于肛门附近的鳞状细胞癌。肿瘤使肛门孔直径缩小至3厘米。经组织学评估，真皮深层和黏膜下结缔组织中有鳞状细胞岛。无法确定肿瘤是起源于肛周区域还是肛门。这是北美首次诊断并报告的公牛肛门区域鳞状细胞癌病例。
