例１男，４２岁。左眼内眦下方红色结节３年。３年前内眦下方外伤出现红色小结节，渐增大，无自觉症，无家族史。皮肤科情况：左内眦下方约０．７ｃｍ×１．０ｃｍ红斑，边界清楚。红斑上有４个小结节，触之较硬，压之不退色，其它部位未见同样皮损。手术切除，组织病理学... Example 1 Male, 42 years old. Red nodules below the medial malleolus of the left eye for 3 years. Three years ago, there was a red nodule below the internal malleolus and gradually increased. There was no conscious disease and no family history. Dermatology: Approximately 0.7cm x 1.0cm erythema below the left medial malleolus with clear boundaries. There were 4 nodules on the erythema. The touch was hard and the pressure did not fade. No other lesions were found on other sites. Surgical resection, histopathology...