A rare case of secondary amenorrhea due to closure of perforate transverse vaginal septum

Perforated transverse vaginal septum (TVS) leading to secondary amenorrhea in unmarried girl is a rare entity. A 20 years old unmarried girl presented to gynaecology OPD with history of amenorrhea since one month and 12 days, pain lower abdomen with swelling since 7 days and difficulty in voiding urine since 2 days. She had history of regular menstrual cycles since the age of 13 years. Local examination revealed pinkish mass bulging through introitus. MRI showed vaginal outlet obstruction with haematocolpos and haematometra. Diagnosis was confirmed and case was successfully managed during examination under anaesthesia. This case highlights the evolution from perforated transverse low vaginal septum with normal and regular menstrual cycles to a complete septum (due to retained menstrual blood and tissue debris) which leads to secondary amenorrhea.