Vaginal polyps are not specifically mentioned in the search results, but uterine and cervical polyps are discussed. Uterine polyps form as a result of cells in the lining of the uterus overgrowing, and they are estrogen-sensitive, meaning they grow in response to estrogen in the body. Cervical polyps are small, irregular growths on the surface of the cervix or in the cervical canal, and they may be caused by chronic inflammation, an abnormal response to increased levels of estrogen, or clogged blood vessels near the cervix. It is possible that vaginal polyps may have similar causes, but further research would be needed to confirm this.