Is low-grade squamous intraepithelial lesion cancer?

First of all, it is clear that low-grade squamous intraepithelial lesions are not cancer. Intraepithelial neoplasia is divided into three grades. Grade 1 is low grade, grade 2 is intermediate, grade 3 is high grade, corresponding to mild, moderate, and severe dysplasia. Among them, severe dysplasia is also called carcinoma in situ. Therefore, if low-grade squamous intraepithelial lesions are only equivalent to mild dysplasia, then they are far from meeting the diagnostic criteria for cancer. It suggests that low-grade squamous intraepithelial lesions require only local treatment and suggest dynamic observation without radical surgery.