Hypercalcemia preferentially occurs in unusual forms of childhood non-Hodgkin's lymphoma, rhabdomyosarcoma, and Wilms tumor. - Leblanc ,A.; Caillaud ,J.M.; Hartmann ,O.; Kalifa ,C.; Flamant ,F.; Patte ,C.; Tournade ,M.F.; Lemerle ,J. (Cancer, 1984)