患者男性,54岁,广州市人,贵阳某公司干部。右膝红色斑块、结节30年余,无自觉症状。于1960年前后,右髌骨部皮肤出现指头大红色结节,否认外伤史。曾在广州诊断为“皮肤结核”,间断使用抗结核药物治疗无效。约五年后调到贵阳某公司工作,皮疹有扩大趋势,亦曾在贵阳多次经抗结核治疗无效。近3年皮疹扩大明显,形成大片斑块,瘙痒,右膝关节活动受限。1991年5月14日再次就诊入院。检查:患者一般情况好,心、肺、肝、脾检查均无异常。皮肤科情况:右膝关节附近皮肤见一约20×30cm 地图状暗红色斑块,边缘 Patient male, 54 years old, Guangzhou city, Guiyang a company cadres. Right knee red patches, nodules more than 30 years, no symptoms. Around 1960, a large red nodule appeared on the skin of the right patella, denying a history of trauma. Was diagnosed in Guangzhou as “skin tuberculosis”, intermittent use of anti-TB drugs ineffective. About five years later transferred to a company in Guiyang, rashes have expanded the trend, but also in Guiyang repeatedly anti-TB treatment ineffective. Rash nearly 3 years to expand significantly, the formation of large patches, itching, right knee joint activity is limited. May 14, 1991 again admitted to hospital. Check: Patients generally good, heart, lung, liver and spleen examination were normal. Dermatology: Right knee near the skin see a map of about 20 × 30cm dark red plaque, the edge