ecrin-mdr-crcClinical1998Colorectal CancerColorectal NeoplasmsColorectal CancerColorectal NeoplasmsInterventionalhttps://newmdr.ecrin.org/Study/20036099Recurrent rectal cancerRecurrent colon cancerStage IV rectal cancerEniluracilStage III rectal cancerStage I colon cancerStage I rectal cancerStage II colon cancerStage IV colon cancerStage III colon cancerStage II rectal cancerECRIN MDRCompletedfalseEniluracil and Surgery in Treating Patients With Primary or Metastatic Colorectal CancerRATIONALE: Eniluracil may increase the effectiveness of chemotherapy by blocking tumor enzymes that break down chemotherapy drugs. PURPOSE: Randomized phase II trial to determine the effectiveness of eniluracil followed by surgery in treating patients who have primary or metastatic colorectal cancer.1998-09-152003609NCT00004195