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Twenty consecutive patients who had biopsy proven metastatic colorectal cancer were treated with combination chemotherapy. The drug regimen (FVH), in a 4 week cycle, consisted of 5-fluorouracil (600 mg/m2 i.v. on days 1, 8, 15 and 22), vincristine (1.4 mg/m2 i.v. on day 4), and hydroxyurea (2400 mg/m2 p.o. on days 3, 10, 17 and 24). Three of the 18 evaluable patients achieved an objective tumor remission (2 CR and 1 PR) and 15 patients had stable disease. The overall response rate to FVH was therefore not superior to that achieved in patients who received 5-fluorouracil alone, and the overall survival in this study was comparable to that of other studies involving patients with metastatic colorectal cancer.
Liberati et al. (Sat,) studied this question.