例 1,男 ,4 4岁。因肛门部生疮流脓、痒痛不适 ,反复发作 10余年 ,加重 3个月入院。患者 10年前于肛门部生疖子数个 ,不久即自溃流脓 ,量少 ,呈糊状有臭味的分泌物 ,时轻时重 ,反复发作。查体 :呈慢性病容 ,消瘦 ,呈贫血貌。局部检查 :见肛门右半侧皮肤呈暗褐色 ,可见有 10数个 Example 1, male, 4 4 years old. Due to anal sore pus, itch pain, repeated attacks for more than 10 years, increased 3 months admitted to hospital. Patients 10 years ago in the anus a few prickly heat, and soon collapse purulent, less, was a paste-like odor of secretions, when light and heavy, recurrent. Physical examination: showed chronic disease, weight loss, anemia appearance. Local examination: see the right side of the anus was dark brown skin, showing that there are 10 several