10 岁英国斗牛犬上唇吻侧部肥大细胞瘤

Photograph of a mast cell tumor in the rostral upper lip of a 10-year-old English Bulldog. This dog's original mast cell tumor engulfed the upper incisors and canine teeth as well as the rostral lip with submandibular lymphadenopathy, precluding wide surgical excision.