VEGFA and colorectal cancer: Stratified by Dukes stage, the median serum VEGF concentration among the colorectal cancer patients was as follows: Stage A: 261 pg ml−1 (range 9–1500); stage B: 266 pg ml−1 (range 15–1975); stage C: 263 pg ml−1 (range 15–2500), and stage D: 304 pg ml−1 (range 19–1475).