Macrophage density at the invasive front of a tumor is associated with lower potential of hepatic metastasis & worse overall survival in colon cancerMacrophages within tumors predominantly expressed HLA‐DR (M1‐like subtype, proinflammatory) & IL‐10 (M2‐like subtype, anti‐inflammatory). Fewer cells were TGF‐β1 positive (M2‐like subtype, anti‐inflammatory). Clear conclusions on an M1‐like or M2‐like overall subtype by analyzing cell surface markers could not be drawn. Here, TGFB1 is linked to digestive system cancer.