WHO Guidelines for Screening and Treatment of Precancerous Lesions for Cervical Cancer Prevention

Cervical intraepithelial neoplasia (CIN) is a premalignant lesion that may exist at any one of three stages: CIN1, CIN2, or CIN3. If left untreated, CIN2 or CIN3 (collectively referred to as CIN2+) can progress to cervical cancer. Instead of screening and diagnosis by the standard sequence of cytology, colposcopy, biopsy, and histological confirmation of CIN, an alternative method is to use a screen-and-treat approach in which the treatment decision is based on a screening test and treatmen...