The once-weekly regimen is much less toxic than and, apparently, about as effective as the four-weekly schedule. This suggests that the toxicity of 5-FU-L-FA adjuvant chemotherapy could be reduced substantially by weekly scheduling without compromising efficacy. Alternatively, efficacy might be enhanced with equal toxicity by more dose-intense weekly FU-L-FA regimens. However, this conclusion from a non-randomised comparison needs confirmation in prospective randomised studies.
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