| Pre-invasive lesions |
| Atypical adenomatous hyperplasia |
| Adenocarcinoma in situ |
| Non-mucinous |
| Mucinous (rare) |
| Adenocarcinoma |
| Minimally invasive adenocarcinoma |
| Non-mucinous |
| Mucinous (rare) |
| Lepidic predominant adenocarcinoma |
| Acinar predominant adenocarcinoma |
| Papillary predominant adenocarcinoma |
| Micropapillary predominant adenocarcinoma |
| Solid predominant adenocarcinoma |
| Invasive mucinous adenocarcinoma |
| Mixed invasive mucinous and non-mucinous adenocarcinoma |
| Colloid adenocarcinoma |
| Fetal adenocarcinoma |
| Enteric adenocarcinoma |
