Case | 
| After normal saline | 
| After acetic acid | 
| After acetic acid with green filter | 
 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; condyloma. | 
| Management: | Punch biopsy from 12 o’clock position. | 
| Histopathology: | LSIL-HPV changes | 
| Comment: | The lesion has a spiculated surface, a raised margin, and became faintly white after acetic acid application. |