Childhood cancer in offspring of two Wilms tumor survivors.
A search was made for cancers among offspring and siblings of 149 Connecticut-born children with Wilms tumor reported to the Connecticut Tumor Registry during 1935 to 1973. Nasopharyngeal rhabdomyosarcoma developed in the daughter of a man with unilateral Wilms tumor that also affected his sister. Hodgkin disease developed in the daughter of a woman who had unilateral Wilms tumor. One other patient had a sibling with Wilms tumor and three had a sibling with other cancers (two Hodgkin disease, one testicular seminoma). The survey suggests an excess risk of other forms of cancer among the progeny and siblings of Wilms tumor patients.