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Multiple renal arteries originating from the aortoiliac vessels were identified angiographically in 44% of 444 prospective renal donors. Bilateral multiple renal arteries were identified in 12%. With good immunological donor-recipient matching, 17 kidneys with multiple renal arteries were transplanted with excellent results; therefore, presence of multiple renal arteries should not be considered a contraindication to kidney transplantation. A high proportion (17%) of the prospective donors, acceptable by all other means of evaluation, had abnormmal angiographic findings that led to reconsideration of their acceptance. In addition to multiple renal arteries, neither renovascular atherosclerosis nor fibromuscular dysplasia proved to be an absolute contraindication to transplantation.

Sixty-eight episodes of pulmonary complication developed in 52 of 416 renal transplant recipients treated with low-dose immunosuppression. Twenty-four complications were noninfectious (20 were pulmonary edema due to transplant rejection). Forty-four complications were infectious (75% of were wholly bacterial). Nine patients died from their pulmonary complications; 7 had bacterial pneumonia, but other infections were also present in 5. Several patterns were seen radiographically. Cardiomegaly, vascular congestion, and patchy consolidation indicated pulmonary edema. Segmental and labor consolidations were usually bacterial in origin. Large cavitary nodules, small nodules, and generalized consolidation were often due to diseases requiring biopsy for diagnosis.