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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Cervical ectropion ： ウィキペディア英語版 Cervical ectropion Cervical ectropion (or cervical eversion) is a condition in which the central (endocervical) columnar epithelium protrudes out through the external os of the cervix and onto the vaginal portion of the cervix, undergoes squamous metaplasia, and transforms to stratified squamous epithelium.〔Katz: Comprehensive Gynecology, 5th Edition.〕 Although not an abnormality, it is indistinguishable from early cervical cancer; therefore, further diagnostic studies (e.g., Pap smear, biopsy) must be performed for a differential diagnosis.〔Mosby's Guide to Physical Examination, 7th Edition. Page 558.〕 ==Formation== The squamocolumnar junction, where the columnar secretory epithelium of the endocervical canal meets the stratified squamous covering of the ectocervix, is located at the external os before puberty. As estrogen levels rise during puberty, the cervical os opens, exposing the endocervical columnar epithelium onto the ectocervix. This area of columnar cells on the ectocervix forms an area that is red and raw in appearance called an ectropion (cervical erosion). It is then exposed to the acidic environment of the vagina and, through a process of squamous metaplasia, transforms into stratified squamous epithelium.〔Standring: Gray's Anatomy, 40th ed.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cervical ectropion」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.