title: Etoposide and Langerhans cell histiocytosis: second malignancies, a second look.
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000009:adverse effects*; D002648:Child; D005047:Etoposide / Q000009:adverse effects*; D006646:Histiocytosis, Langerhans-Cell / Q000188:drug therapy*; D006801:Humans; D016609:Neoplasms, Second Primary / Q000209:etiology*