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High Grade Squamous Intraepithelial Neoplasia
Definition 1
A precancerous neoplastic process characterized by the presence of moderate or severe dysplastic cytological changes which extend to the upper part of the squamous epithelium. Maturation at the surface of the squamous epithelium may or may not be present. Representative examples include the high grade esophageal squamous intraepithelial neoplasia, high grade cervical squamous intraepithelial neoplasia, high grade vaginal intraepithelial neoplasia, and high grade vulvar intraepithelial neoplasia. (NCI Thesaurus)
Definition 2
Cells of the uterine cervix that are moderately or severely abnormal and may become cancer. (NCI Dictionary)
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