OUTLINE: This is a dose escalation, open label, multicenter study. Patients receive monoclonal antibody F19 (BIBH-1) IV over 60 minutes weekly for 12 weeks. The first, fifth, and ninth treatments are combined with iodine I 131. Patients with stable or responding disease may continue treatment for up to 12 months. The dose of BIBH-1 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 at 1 month.