A lesion with cytological characteristics associated with invasive carcinoma but the tumor cells are confined to the epithelium of origin, without invasion of the basement membrane.

Synonyms: Neoplasms, Intraepithelial, Intraepithelial Neoplasm, Carcinoma in Situ, Preinvasive Carcinoma, Neoplasm, Intraepithelial, Intraepithelial Neoplasms, Carcinoma, Intraepithelial, Carcinoma, Preinvasive, Intraepithelial Carcinoma