Inclusion Criteria:

- Patients must be between 13 and 65 years of age, inclusive

- Must have unresectable primary tumor or metastases

- Must have measurable disease that is demonstrated by positive Tc-99m Bone Scan. Not
all lesions must be positive on bone scan.

- Creatinine clearance >70ml/min/1.73m2

- ANC >500/mm3

- Platelets >50,000/mm3

- Life expectancy > 8 weeks

- Karnofsky performance status >50%

- Stem cell product collected prior to the infusion of Samarium must be available,
either by peripheral stem cell mobilization or bone marrow harvest prior to trial
entry.

Exclusion Criteria:

- Patient may not be pregnant or breastfeeding.

- Patients who have received prior radiotherapy to all areas of current active disease
are not eligible.