Colposcopic Appearances, Normal and Abnormal Cervix Dr. Nelson Siu Associate Consultant Honorary Clinical Assistant Professor Department of Obstetrics & Gynaecology Prince of Wales Hospital The Chinese University of Hong Kong Transformation Zone Metaplastic squamous epithelium Abnormal (atypical) epithelium Transformation Zone Transformation Zone • pre-puberty • menopause Transformation Zone • reproductive age Transformation Zone • pregnancy • ectropian Normal Cervix Normal Cervix Normal Squamous Epithelium pink and smooth epithelium Normal Columnar Epithelium grape like or villous appearance, villi turns white with acetic acid