Of 505 consecutive renal transplants urologic complications occurred in 4.1 per cent of cadaver, 2.6 per cent of living related, 1.9 per cent of diabetic and 3.8 per cent of nondiabetic allografts. Over-all, patient survival and graft salvage rates were 94 and 83 per cent, respectively. Principles of prevention, diagnosis and management of these complications are discussed. In contrast to prior standards the bladder catheter was removed within 36 hours postoperatively in nearly all cases without any increase in morbidity.

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There were 49 insulin-dependent diabetics who received 52 renal allografts: 13 from living related and 39 from cadaveric donors. The mean age and time on dialysis were similar for both recipient groups. Patient survival at 1 and 2 years was 100 per cent for living related donor recipients, and 76 and 56 per cent at 1 and 2 years for cadaveric recipients. Renal allograft survival was 92 and 85 per cent at 1 and 2 years for living related donor recipients. Cadaveric allograft survival was 49 and 41 per cent at 1 and 2 years. The cumulative mortality rate was 39 per cent and the over-all surgical morbidity was low. Renal transplantation in diabetic patients is worthwhile from the standpoint of patient and allograft survival.