Purpose

RATIONALE: Monoclonal antibodies can locate tumor cells and either kill them or deliver tumor-killing substances to them without harming normal cells. It is not yet known whether giving monoclonal antibody therapy is more effective than a placebo in treating patients with ovarian epithelial, fallopian tube, or peritoneal cancer who have responded to surgery and chemotherapy. PURPOSE: Randomized phase II trial to study the effectiveness of monoclonal antibody therapy in treating patients with residual disease from stage III or stage IV ovarian epithelial, fallopian tube, or peritoneal cancer following surgery and chemotherapy.