Poorly differentiated neuroendocrine carcinomas (NECs) | Small cell carcinoma |
Large cell neuroendocrine carcinoma | |
Well-differentiated neuroendocrine tumours (NETs) | Typical carcinoid |
Atypical carcinoid | |
Combination of NE and non-NE features | Mixed exocrine-endocrine carcinoma (MEEC) (adeno) carcinoma with (focal) NE differentiation |