Abstract
Renal problems in the neonatal period are often difficult to evaluate radiographically due to the frequent problem of poor urinary concentration on the intravenous pyelogram. This problem may be circumvented by the application of B-scan techniques. Despite the well defined use of ultrasound in the management of adult renal problems, the feasibility and advantages of neonatal renal sonography have not received sufficient attention. The anatomically normal neonatal kidney has a characteristic ultrasound appearance. It can delineate specific disease states such as obstruction, masses and perinephric fluid collections. Renal size may be accurately assessed. In cases of anuria and suspected renal agenesis not only is identification of the kidneys important, but the demonstration of the fluid filled bladder may be useful as indirect evidence of renal function. We have examined 145 neonates in a variety of clinical situations and clearly established the usefulness of ultrasound as a tool in solving this dilemma.
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