[Serum vascular endothelial growth factor levels in patients with colorectal cancer and its prognostic significance].

Background And Objective: Thirty per cent of patients with histologically node-negative colorectal cancer die from disseminated disease. Actually disease stage is the most useful prognostic parameter although it is not sufficient. Vascular endothelial growth factor (VEGF) is an angiogenic cytokine involved in the progression of tumors.