笔者遇见左食指恶性黑色素瘤误诊糖尿病感染1例,分析如下。1病历摘要女,60岁。于20 a前左食指、左食指指甲正中出现一黑色纵线。于2 a前患者因口干、口渴、多饮、多尿,检查FBG 10.2mm o l/L,确诊糖尿病(DM)。于1 a前指甲中黑线渐增宽,整个指甲变黑,逐渐指甲中裂、脱落,指端变黑 I met the left index finger malignant melanoma misdiagnosis of diabetes in 1 case, as follows. 1 medical record summary female, 60 years old. Before 20 a left index finger, a black vertical line appears in the middle of left nails. Before 2 a patients due to dry mouth, thirst, polydipsia, polyuria, check FBG 10.2mm o l / L, diagnosed with diabetes (DM). Before 1 a nails in the black line gradually widened, the entire nails black, and gradually nail crack, fall off, finger end black