RESUMO
This is a compilation of the results of preventive intraarterial infusion following resection of hepatic metastasis from colorectal cancer at four surgical centers. The cases studied included two groups: A) 76 patients who underwent normal liver resection only, and B) 78 patients who underwent resection with adjuvant chemotherapy. Methods included: 1) WHF, 50 cases; 2) other methods using 5-FU, 18 cases; and 3) intraarterial infusions other than 5-FU, 10 (2 cases, outcome unknown). Survival rates for groups A and B for 1 and 5 years were 71.2, 18.9% and 91.5, 56.2%, respectively, with the rates for the intraarterial infusion group showing far better results. The 1- and 5-year survival rates in terms of infusion methods were: 1) 90.7% and 64.6%; 2) 94.4% and 39.3%; and 3) 90% and 60%, respectively, showing no remarkable differences between methods. Total doses of 5-FU were (a) less than 5 g, 7 patients (b) 5-15 g, 16 patients (c) 15-30 g, 22 patients (d) greater than 30 g, 23 patients. A comparison of 1- and 5-year survival rates shows (a) 85.7% and 17.1%; (b) 66.5% and 44.3%; (c) 100% and 62.7%; (d) 100% and 66.5%, respectively, with doses (c) and (d) showing markedly better results than the (a) dosage. From this we conclude that the group undergoing intraarterial hepatic infusion had a markedly improved prognosis compared to the group not undergoing any type of adjuvant therapy. Also, groups receiving a dosage of 15 g or greater of 5-FU showed prolonged survival rates.