患者男,43岁,1990年11月2日就诊。10年前患者发现龟头有2处约绿豆至黄豆大的淡红色斑,无自觉症状,未予治疗。近5年渐变为褐色,病程中皮损未破溃、无鳞屑、无增大及周边反复充血现象。体检:龟头腹侧可见2处约2～3mmX3～5mm的深褐色斑,境界清楚,周围无炎性红晕,其表面光滑平坦,无鳞屑及萎缩,无漫润及压痛、双侧腹股沟未触及肿大之浅表淋巴结。 The patient male, 43 years old, presented on November 2, 1990. 10 years ago, the patient found that there were 2 large spots of magenta to soybean in the glans, with no symptoms and no treatment. Gradual change to brown in the past 5 years, during the course of skin lesions are not ulcerated, no scales, no increase and peripheral hyperemia. Physical examination: There are two dark brown spots about 2~3mmX3~5mm on the ventral side of the glans. The state is clear, there is no inflammatory blush around, and the surface is smooth and flat, no scaling and atrophy, no diffuse and tenderness, no bilateral swelling of the inguinal groin. Superficial lymph nodes.