label: Cervical intraepithelial neoplasia
label_lc: cervical intraepithelial neoplasia
description: "A precancerous condition characterized by dysplasia of the cervical epithelium. Cervical intraepithelial neoplasia (CIN) 1, 2 and 3 based on its relationship with the prognosis. CIN 1 is mild dysplasia, which is mostly observed because it disappears as part of its natural course. CIN 3 includes severe dysplasia and carcinoma in situ, and management involves treatment because it is highly likely to develop into invasive cancer."