title: [A second malignant disease in pediatrics. Report of 4 cases].
mesh_terms: D000970:Antineoplastic Agents / Q000009:adverse effects; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009378:Neoplasms, Multiple Primary; D011878:Radiotherapy / Q000009:adverse effects
chemical_list: D000970:Antineoplastic Agents
vernacular_title: Segunda enfermedad maligna en pediatría. Comunicación de 4 casos.