Browse A-Z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9 Wilms tumor Back Wilms tumor Wilms tumor is a cancerous tumor of the kidney that occurs in children. A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser. Content is best viewed in IE9 or above, Firefox and Google Chrome browser.