Template:Cervical dysplasia

Cervical intraepithelial neoplasia

Histology Grade	Corresponding Cytology	Description	Image
CIN 1 (Grade I)	Low-grade squamous intraepithelial lesion (LSIL)	Mild epithelial dysplasia Confined to the basal 1/3 of the epithelium
CIN 2/3	High-grade squamous intraepithelial lesion (HSIL)	Represents a mix of low and high-grade lesions not easily differentiated by histology
CIN 2 (Grade II)		Moderate dysplasia confined to the basal 2/3 of the epithelium Represents a mix of low- and high-grade lesions not easily differentiated by histology
CIN 3 (Grade III)		Severe dysplasia with undifferentiated neoplastic cells that span more than 2/3 of the epithelium May involve the full thickness May also be referred to as cervical carcinoma in situ