Regression, persistence and progression rates of different CIN grades
| Regression (%) | Persistence (%) | Progression to CIS (%) | Progression to invasive carcinoma (%) | |
|---|---|---|---|---|
| Data from Osteer.1 | ||||
| CIN, cervical intraepithelial neoplasia; CIS, carcinoma in situ. | ||||
| CIN1 | 57 | 32 | 11 | 1 |
| CIN2 | 44 | 35 | 22 | 5 |
| CIN3 | 32 | <56 | – | 12 |