临床资料患者男,55岁。因“双手指、足第一趾跖关节内侧发生黄色结节20年余”就诊。轻压痛,皮疹可自行破溃,溢出豆渣样物,伴全身关节反复疼痛。皮肤科查体:双手指、足第一跖趾关节内侧黄白色或淡黄色结节,绿豆至核桃大,质中到硬(图1、2),关节 Clinical data Patient male, 55 years old. Due to “double fingers, feet inside the first metatarsal joint yellow nodules occurred more than 20 years ” treatment. Light tenderness, rash can ulceration on their own, spill sample of beans, with repeated pain in the joints. Dermatology examination: two fingers, foot first metatarsophalangeal joint medial yellowish white or light yellow nodules, mung beans to walnut large, medium to hard (Figure 1,2), joint