Warty or small papillary contour, indistinct acetowhite epithelium, edges appear cloudy or feathery, angular, rough lesions, satellite lesions with acetowhite epithelium extending beyond the transformation zone.

Smooth, straight, regular lesion contour with sharp edges.

Curled edges, epithelial peeling, and various mixed lesions within the lesion area.

Bright, snow-white, transient, indistinct, semi-transparent acetowhite epithelium.

Bright, less white, or intermittently white.

Dirty, oyster-gray, thick slightly raised acetowhite epithelium.

Fine punctation or fine mosaic. Small irregular vessel diameter, non-dilated vascular loops. Narrow capillary spacing.

No vascular appearance after applying acetic acid.

Coarse punctation or large mosaic. Individual vessel dilation. Widened capillary spacing.

Entire cervix stained dark brown, previous three items ≤2 points, and iodine test (-), indicating low-grade lesion.

Partially stained light brown, mottled turtle shell appearance.

No staining, mustard yellow, previous three items ≥3 points, and iodine test (-), indicating high-grade lesion.