UNUSUAL RENAL MASSES IN THE PEDIATRIC AGE GROUP

The majority of intrarenal mass lesions in the pediatric age group prove to be either nephroblastoma, unilateral multicystic kidney or hydronephrosis. These lesions are diagnosed quite accurately by intravenous urography in the majority of instances.

Although uncommon, other neoplastic and non-neoplastic solid and cystic lesions occur with sufficient frequency to be considered in the differential (diagnosis, and certainly any lesion with an atypical appearance by intravenous urography warrants special roentgenographic techniques, paticularly because the therapeutic management may be altered by the outcome of such investigations.

Some of these case reports illustrate the advantages of arteriography. However, its limitations in the establishment of a histologic diagnosis must be appreciated.

One must also be cognizant of the fact that even the common lesions may occasionally have unusual roentgenographic manifestations.

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