TABLE 1.
Endocervical adenocarcinoma classifications according to the WHO 2014 and IECC 2018/WHO 2020 classification systems
| WHO 2014 | IECC 2018/WHO 2020 |
|---|---|
| Endocervical adenocarcinoma, usual type | HPV-associated endocervical adenocarcinoma |
| Mucinous carcinoma NOS | Usual type |
| Mucinous carcinoma, gastric type | Mucinous (NOS, intestinal, signet ring cell, ISMC) |
| Mucinous carcinoma, intestinal type | Adenocarcinoma NOS |
| Mucinous carcinoma, signet-ring cell type | HPV-independent endocervical adenocarcinoma |
| Villoglandular carcinoma | Gastric type |
| Mesonephric carcinoma | Mesonephric type |
| Serous carcinoma | Endometrioid type |
| Clear cell carcinoma | Clear cell type |
| Endometrioid carcinoma | Adenocarcinoma NOS |
| Adenocarcinoma NOS |
HPV indicates human papillomavirus; IECC, International Endocervical Adenocarcinoma Criteria and Classification; ISMC, invasive stratified mucinous carcinoma; NOS, not otherwise specified; WHO, World Health Organization.