<prompt> In colposcopy, following are visualized except :Upper 23rd endocervixLower 13rd endocervixVault of vaginaLateral fornix  <response>: Upper 23rd endocervix Colposcopy is a method to evaluate the changes in the terminal vascular network of the cervix, the transformation zone, Vagina and Fornix. In the cervix, upper 23i of endocervix is not visualized by colposcopy the maximum limit being 5 mm above the canal. A colposcope is a binocular microscope producing magnification of 5 - 15 times.deg Colposcopy is done after application of 3 - 5 acetic acid, to the abnormal area.deg It can detect cervical dysplasias, metaplasia and carcinoma in situ.deg Indications very impoant : In case of abnormal pap smear cytologydeg. To locate abnormal areas.deg To obtain directed biopsies.deg Conservative therapy under colposcopic guidance.deg For follow up of patients treated conservatively.deg Some other Indications : In case of unexplained intermenstrual or post coital bleeding. History of Inutero Diethylstilbestrol exposure. Vulva or vaginal neoplasia. For more details on Colposcopy, see Chapter 12 B - CIN and Ca Cervix. 