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[Does an efficacious adjuvant treatment exist in resected colonic carcinoma?].

The prognosis of colon cancer after curative resection is mainly related to the onset of metastases, and especially of liver metastases. In order to prevent metastatic recurrences, the value of adjuvant medical therapy is widely admitted. The aim of the present review was to analyse the conclusions of the main recent randomized trials assessing the comparative value of different adjuvant protocols. The results obtained using either classic systemic infusion or intraportal infusion, which is mainly used with the intent of preventing liver metastases, are reported. At term of this review, we conclude that: adjuvant chemotherapy using combined drugs (5-Fluorouracil + Methyl CCNU, 5-Fluorouracil + Oncovin) did not prove to be more active than 5-FU alone. the beneficial action of a combined 5-FU + Levamisole regimen has been clearly demonstrated for patients with a Dukes C tumor. intraportal adjuvant therapy has been shown to be effective for patients with Dukes B tumors in only one limited trial but this remains to be confirmed. On the basis of the present data, new adjuvant programs using combined chemotherapeutic and immunotherapeutic compounds, and combined systemic and regional infusion, can be envisaged.