Abstract

The frequency of prenatally detected renal abnormalities continues to present perplexing diagnostic and therapeutic decisions for the radiologist, neonatologist, and urologist. We review recent literature evaluating the prenatal diagnostic criteria and suggesting initial and follow-up evaluation protocols for several common neonatal entities including vesicoureteral reflux (VUR), ureteropelvic junction (UPJ) obstruction, multicystic dysplastic kidney (MCDK), and posterior urethral valves (PUV). New imaging features of both common and unusual pediatric masses are presented. The role of MRI in imaging of selected abdominal masses is becoming clearer, as demonstrated in cases of Wilms' tumor and nephroblastomatosis.

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