Cervical Squamous Intraepithelial Neoplasia 1

**Semantic type:** Neoplastic Process

**Definition:** Cervical squamous intraepithelial neoplasia that is usually associated with human papillomavirus infection and is characterized by the presence of mild atypia in the superficial squamous epithelial layer and maturation in the upper two thirds of the epithelium. Mitotic figures are not numerous and are confined to the basal third of the epithelium.

**Synonyms:** - CIN 1 - CIN 1 - Low Grade Cervical Squamous Intraepithelial Lesion - Low Grade Cervical Squamous Intraepithelial Neoplasia - Low Grade Cervical Squamous Intraepithelial Neoplasia - Low-Grade CIN - Low-Grade Cervical SIL - Low-Grade Cervical Squamous Intraepithelial Lesion - Mild Squamous Dysplasia of the Cervix - cervical squamous intraepithelial neoplasia 1