CNTN2 and neoplasm: As seen in Figure 3A, the T2G3 papillary urothelial carcinoma reveals a dense inflammatory infiltrate in which numerous extravasated neutrophils and mononuclear cells are probably interacting with tumor cells, whereas the TaG1 tumor (Figure 3B) displays a mild inflammatory response within the tumor papillae with scanty mononuclear and neutrophilic cells in close relationship with tumor cells.