患者男,56岁,患糖尿病7年,服降糖药物治疗从未间断,血糖在11.1 mmol/L左右。2年前右足三、四趾间出现黄豆大小不规则色素沉着斑渐增大。1年前因不慎烫破该处表面致糜烂性溃疡在外院久治不愈,于1991年6月转入我院。入院检查:较肥胖、营养良好,血压18.6/12.0kPa。右腹股沟可触 Male patient, 56 years old, suffering from diabetes for 7 years, medication hypoglycemic therapy never stopped, blood glucose at 11.1 mmol / L or so. 2 years ago, right foot three, four toe irregular soybean pigmentation appears spot size increased. A year ago due to accidental hot surface erosion at the surface of erosive ulcers outside the permanent treatment, in June 1991 transferred to our hospital. Admission examination: more obese, well-nourished, blood pressure 18.6 / 12.0kPa. Right groin can touch