Cervical Dysplasia (CIN I, II, III)

Cervical dysplasia, or cervical intraepithelial neoplasia (CIN), occurs when cells on the cervix's surface grow in an improper way. The degree of the growth is rated as CIN I, II, or III. CIN I is a minor form of dysplasia in which abnormal cells mainly affect the lower third of the cervical epithelium. It usually goes away on its own without therapy. CIN II shows substantial dysplasia with abnormal cells affecting around two-thirds of the epithelium layer. This means there is a higher chance of the condition getting worse and needing medical help. CIN III is severe dysplasia or carcinoma in situ, where abnormal cells take up more than two-thirds or the whole thickness of the epithelium. This stage has the highest chance of turning into invasive cervical cancer and needs to be treated right once.
It usually takes years for CIN to turn into aggressive cancer, which gives doctors time to find and treat it. The primary aetiology of CIN is chronic infection with high-risk human papillomavirus (HPV) types. Pap smears, colposcopy, and biopsy are all used to get a diagnosis. Management is based on the CIN grade: CIN I is watched, while CIN II and III are treated with surgery to stop cancer from happening. Finding and treating cervical cancer early lowers the risk a lot.