Other Terminologies in Bethesda System

Although the 2001 Bethesda System classification is applied in many countries, other classification systems are also widely used. As mentioned previously, many countries prefer to subclassify high-grade intraepithelial lesions into at least two categories. This is the approach used in the United Kingdom, where squamous intraepithelial abnormalities are divided into five categories (borderline changes; mild, moderate, severe dyskaryosis and severe dyskaryosis or possibly invasive cancer) (British Society for Clinical Cytology, 1997)