OUTLINE: Patients receive fludarabine IV over 10-30 minutes on days 1-5. Patients not currently receiving octreotide, receive a test dose of octreotide subcutaneously on day 1 during course 1 only and then receive octreotide intramuscularly monthly on day 1. Treatment repeats every 28 days for 4-6 courses. Patients then receive octreotide alone for 6-8 courses. Some patients may then receive another 12 courses of octreotide alone, for a total of 2 years of treatment. Patients are followed every 3 months for 5 years or until disease progression.