OUTLINE: This is a dose escalation study. Patients receive intraperitoneal aminocamptothecin colloidal dispersion (9-AC) over 30-60 minutes in 6 applications over a 12 day period (days 1, 3, 5, 8, 10, and 12). Courses are repeated every 28 days. Treatment continues for 4-6 courses in the absence of unacceptable toxic effects or disease progression. The dose of 9-AC is escalated in cohorts of 3-6 patients until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which 2 of 3 or 2 of 6 patients experience dose limiting toxicity. Patients are followed until death.