Thanks to this classification, WED‐NENs can be further divided into NET G1 (Ki‐67 < 3%; MI <2/10 high‐power fields [HPF]), NET G2 (Ki‐67 3–20%; MI 2–20/10 HPF) and NET G3 (Ki‐67 > 20%; MI >20/10 HPF); on the other hand POD tumors are classified as neuroendocrine carcinomas (NECs) G3, having by definition Ki‐67 > 20%. Here, MKI67 is linked to neuroendocrine carcinoma.