Palliative Therapie des kolorektalen Karzinoms

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Abstract
Systemic chemotherapy has a key role in the palliative treatment of patients with metastatic colorectal cancer. Compared to best supportive care, 5-fluorouracil (5-FU)-based therapy prolongs survival and improves quality of life. 5-FU continuous infusion modulated by Leukovorin (LV) is the optimal basis for a combination therapy with irinotecan or oxaliplatin. Randomized trials investigating the role of irinotecan in combination with 5-FU/LV relative to 5-FU/LV alone demonstrated a significant improvement in the response rate, progression free survival and overall survival. Randomized studies using oxaliplatin/ 5-FU/LV vs. FU/LV alone resulted in a higher response rate and longer progression-free survival while the overall survival was not significantly different. Today, all patients should receive combination treatment in first line and should be offered all active compounds during the course of their disease. Hereby, median survival times of more than 20 months are achievable. The use of oral fluoropyrimidines as a substitute of infusional 5-FU in combination with irinotecan or oxaliplatin is promising and subject of clinical trials. Monoclonal antibodies directed against the EGF-receptor or against VEGF have demonstrated interesting results and may be a treatment option in the future.

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