Twenty-four patients with metastatic colorectal carcinoma were treated with a chemotherapeutic regimen consisting of 5-fluorouracil, CCNU, and vincristine (FCV). Twenty patients were evaluable for response and 22 were evaluable for drug toxicity. One patient (5%) showed partial response, eight patients (40%) had stabilization of disease, and the remaining 11 patients (55%) had progression of disease. There was no statistically significant difference between the median survivals of patients with stabilization and of those with progression of their disease (p greater than 0.01). We were unable to demonstrate objective efficacy of the FCV regimen in the schedule used.