PGF and esophageal cancer: Concerning the subpopulation of esophageal cancer only PlGF (at RTduring, p = 0.003; and at RTend, p = 0.01), VEGF (at RTduring, p = 0.02), VEGF-C (at RTduring p = 0.001; and at RTend, p = 0.03) and VEGF-D (at FU1, p = 0.04) showed statistical differences compared to baseline (Figure 2).