High expression of insulinoma-associated protein 1 (INSM1) distinguishes colorectal mixed and pure neuroendocrine carcinomas from conventional adenocarcinomas with diffuse expression of synaptophysin. - Litmeyer AS; Konukiewitz B; Kasajima A; Foersch S; Schicktanz F; Schmitt M; Kellers F; Grass A; Jank P; Lehman B; Gress TM; Rinke A; et al. (The journal of pathology. Clinical research, 2023)