Gynaecology & Obstetrics Classification, Symptoms, and Signs a91388ad Most common mass descending mass per vaginum- A Labial cyst B Vagianl cyst C Myoma D Uterovaginal prolapse High-Yield Explanation Ans. is 'd' i.e., Uterovaginal prolapse o Mass descending per vaginum is a common gynaecological complaint and is most often due to uterovaginal prolapse.