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[A case of penile necrosis in a patient with diabetes mellitus].

The patient was a 63-year-old male who was with having diabetes mellitus since 1967. Hemodialysis was carried out from June 1983 for diabetic nephropathy. Neuropathy and retinopathy were already present at that time. He complained pain in penile glans from the middle of June 1990. Three month later, partial penectomy was performed because of the development of black-mummy-shaped necrosis on the whole glans. Histopathological examination widely revealed luminal obstruction and formation of thrombus due mainly to vascular lesions as a result of diabetes mellitus. As far as we know, case reports of diabetes mellitus complicated with penile necrosis are extremely rare, and this present case seems to be the 2nd one in Japan and the 5th one in the world, including those reported previously in the West.