激光手术可准确彻底地清除全部显见病变及潜在的受累组织。拟用激光治疗宫颈上皮内新生物的妇科阴道镜工作者须先认识高危组织在宫颈的分布和病变的深度,再规划切除部位。移行区的柱状上皮易发展为宫颈癌。异位的柱状上皮及腺体与年龄有关。在新生儿,初潮与青春等时期柱状上皮生理位置常达子宫外口,在第一次妊娠时更严重。这意味着宫颈粘膜和肌层能上下迁移。而宫颈粘膜的长者宽度则较恒定。年青妇女是向阴道迁移,而至绝经 Laser surgery can accurately and completely remove all visible lesions and potentially affected tissues. Gynecological colposcopy workers who intend to use laser treatment of new cervical intraepithelial neoplasms should first understand the distribution of the high-risk tissue in the cervix and the depth of the lesion, and then plan the resection site. Migration of the columnar epithelium prone to cervical cancer. Ectopic columnar epithelium and gland and age-related. In newborns, menarche and youth and other period of the columnar epithelium often up to the uterus physiological position, more serious in the first pregnancy. This means that cervical mucosa and musculature can migrate up and down. While the elderly cervical mucosa width is more constant. Young women are vaginal migrating to menopause