9. Patients must be enrolled within 6 months of completing chemotherapy or after surgery of the primary site. Any acute/subacute > or = grade 3 toxicities from the chemotherapy must be resolved to < or = grade 2 at the time of study entry. It is suggested that patients undergo prophylactic cranial irradiation as a soon as they have recovered from chemotherapy or surgery, at a minimum of 2 weeks, and up to 6 months following chemotherapy or surgery.