Monarch Disease Ontology id MONDO_0042491 (cervical squamous intraepithelial neoplasia) is a neoplastic process that affects the squamous epithelium of the cervix. It is classified as cervical squamous intraepithelial neoplasia 1, 2, or 3, according to the degree of squamous cell maturation and cellular atypia, and the number of mitotic figures. Also known as: CIN, cervical sil, cervical squamous intraepithelial lesion, cervix squamous intraepithelial lesion, cervix uteri sil, cervix uteri squamous intraepithelial lesion, squamous intraepithelial lesion of cervix, squamous intraepithelial lesion of cervix uteri.