Wilms' tumor is a disease in which cancer (malignant) cells are found in certain parts of the kidney. The kidneys are a "matched" pair of organs found on either side of the backbone. Inside each kidney are tiny tubes that filter and clean the blood, taking out unneeded products, and making urine. Wilms' tumor occurs most commonly in children under the age of 15 and is curable in the majority of affected children.

malignant renal tumor of young children characterized by hypertension and blood in the urine and the presence of a palpable mass

A kidney cancer (tumor) that occurs in children, usually before age 5. Return to alphabet X chromosome A sex chromosome; normal females carry two X chromosomes.