|    | 
| After acetic acid | 
| After acetic acid | 
| After acetic acid with green filter | 
| After Lugol’s iodine | 
|  General assessment | |||||||||||||||||
|  Normal colposcopic findings | |||||||||||||||||
|  Abnormal colposcopic findings | |||||||||||||||||
|  General principles | |||||||||||||||||
|  Position and size | |||||||||||||||||
|  Grade 1 (minor)  |  Grade 2 (major)  |  Non-specific  |  Suspicious for invasion  |  Miscellaneous finding  |  | 
| Nil or transparent | Thin, milky | Distinct, stearin | |
| Nil or diffuse | Sharp but irregular, jagged, satellites | Sharp and even, difference in level | |
| Fine, regular | Absent | Coarse or atypical vessels | |
| < 5 mm | 5-15 mm or 2 quadrants | >15 mm, 3-4 quadrants, or endocervically undefined | |
| Brown | Faintly or patchy yellow | Distinctly yellow | 
| Provisional diagnosis: | Type 1 transformation zone; high-grade squamous intraepithelial lesion (HSIL). | 
| Management: | Cryotherapy or thermal ablation after taking punch biopsy from the lesion. | 
| Histopathology: | HSIL-CIN2. | 
| Comment: | The thin acetowhite area in the posterior lip with multiple crypt openings is due to immature metaplasia. The high grade lesion is limited to only one quadrant. | 
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