Abstract
Renal papillary and cortical necrosis (RPCN) in newborn infants has been generally fatal. This report describes three survivors of neonatal RPCN who have been followed up from 23 to 57 months. The cause of RPCN was hemorrhage and asphyxia neonatorum in two patients and hemorrhage and shock in one. The diagnosis was confirmed in one patient by an excretory urogram at 3 weeks of age and in another by renal biopsy at 5 weeks of age. In the third, diagnosis was made retrospectively. Findings from subsequent examination showed that creatinine clearance was normal in one patient, slightly reduced in another, and moderately reduced in the third. Maximum ability to concentrate urine was decreased in all. Follow-up excretory urograms in all three patients showed dilated bizarre-appearing calices and renal cortical atrophy. These radiologic findings are similar to those found in segmental hypoplasia or chronic (atrophic) pyelonephritis.
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