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1临床资料患者女,67岁。左腹部黑褐色丘疹20年。20年前,不明原因患者左腹部出现豆粒大黑褐色丘疹,逐渐增大,形成斑块,表面略粗糙,略痒,曾间断外用糖皮质激素药膏,疗效不佳。近1年来皮疹增长较快,有时因搔抓会出现黄色渗液,伴疼痛。患
1 clinical data of female patients, 67 years old. Left abdomen dark brown pimples for 20 years. Twenty years ago, patients with unexplained beans appeared large dark brown papules on the left abdomen, gradually increased, the formation of plaque, the surface slightly rough, itchy, had intermittent topical glucocorticoid ointment, poor efficacy. Rash in the past year increased rapidly, sometimes due to scratching will appear yellow exudate, with pain. Suffering