Systematic reviews were identified using the key words: childhood cancer, head and neck, thyroid cancer, rhabdomyosarcoma, nasopharyngeal carcinoma, neuroblastoma, lymphadenopathy, Hodgkin’s lymphoma, non-Hodgkin’s lymphoma, sarcoma, and palliative care; these subject headings were used to search the Cochrane database of systematic reviews. Individual articles were then identified using the same search terms in Ovid Medline. A hand-search of the ensuing bibliographies completed the search.