患者81岁,白人农民.背部疣状皮损已10年,损害周围进行性色素减退6个月,局部无其他症状.检查见背部多个疣状损害伴有色素减退晕轮.手背及肩有多发性白斑(系在疣状损害周围色素减退出现之前大约5年发生).体检未发现其他异常.实验检查:血细胞计数(CBC)及血化学均在正常范围,临床上未见甲状腺异常、恶性贫血、糖尿病、肾上腺 The patient was 81 years old and the white farmer had a 10-year history of lesions on the back and had lesions of peripheral hypopigmentation for 6 months. There were no other symptoms locally. Check the back for multiple spastic lesions with pigmentation, halo rounds, back and shoulders. Multiple leukoplakia occurs approximately 5 years before hypopigmentation around verrucous lesions. No other abnormalities are found on physical examinations. Laboratory tests: Blood cell counts (CBC) and blood chemistry are within the normal range. No thyroid abnormalities and malignancies are clinically seen. Anemia, diabetes, adrenal glands