<prompt> In Ca cervix low grade squamous intraepithelial lesion LSIL in Bethesda system involves:CIN ICIN IICIN IIISquamous metaplasia  <response>: Ans: A CINI CIN-I is lately described as low grade squamous intraepithelial lesion LSIL according to Bethesda classification.CIN-II and CIN-III are described as high grade squamous intraepithelial lesion HSIL according to latest Bethesda classification. HSIL have propensity to progress and become invasive, and therefore need investigations and treatment- Shaws Gynaecology 14th 360 