Wilms’ Tumor

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Abstract

Wilms’ tumor, or nephroblastoma, is the most common primary malignant renal tumor of children. The incidence rate was 6.9 cases per million US white children less than 15 years of age per year. The corresponding figure for US black children was 8.1 600. The tumor occurred at a relatively constant rate among children of diverse ethnic backgrounds and geographic locations. The highest rate was 10.4, observed among United States black males, and the lowest rate was 4.9, observed among boys in Manchester, England 40,41,136,160,355,356,409,541,598,600 (Table 1).