OUTLINE: This is a dose-escalation study. Patients are sequentially assigned to one of three dose levels. Patients receive modified autologous dendritic cells subcutaneously on day 1 with or without interleukin-2 IV on days 4-19. Treatment continues every 21 days for a total of 6 courses in the absence of disease progression or unacceptable toxicity. Cohorts of 3-6 patients receive escalating doses of modified dendritic cells with or without interleukin-2 until the maximum tolerated dose (MTD) for each regimen is reached. The MTD is defined as the dose below that at which 2 of 6 patients experience dose-limiting toxicity.