Let the experts from Fuzhou Southeast Maternal and Child Hospital explain it to us. : 1. Congenital absence of vagina Patients with congenital absence of vagina are commonly known as infertile women. According to statistics, there is one such patient in every 4,000 women. This kind of patient is caused by the fact that the bilateral accessory middle renal ducts do not extend to the end after meeting, and this kind of patient only sees a shallow recess at the vaginal opening. Congenital absence of vagina is often combined with congenital absence of uterus, so there is no menstruation and delivery is hopeless. A few patients have normal uterus. If the ovary and endometrium function normally, patients will have menstrual blood retention after puberty and have difficulty in sexual intercourse after marriage. 2. Vaginal atresia or stenosis is caused by the failure or only partial penetration of the lowest end of the accessory middle kidney catheter. The former is called vaginal atresia and the latter is called vaginal stenosis. Vaginal atresia, after puberty, periodic dysmenorrhea may occur due to menstrual blood retention. Anal diagnosis shows a lump formed by hematocele above the atresia site. Vaginal stenosis can be prevented by menstrual blood discharge, but it is often difficult to have sex after marriage. 3. Transvaginal septum may be caused by incomplete or only partial connection between the end of accessory middle kidney and urogenital sinus after two accessory middle kidneys are connected. Complete transverse isolation is rare. Most of them have a small hole in the center of the diaphragm, and sometimes menstrual blood can flow out only through a thin probe. If the diaphragm position is low, the patient may be sexy and unhappy after marriage; If the diaphragm is on the high side, patients often see a doctor because of infertility. Such patients often can't give birth naturally, and if they are pregnant, they need caesarean section. 4. Vaginal mediastinum is caused by mediastinum not disappearing after the confluence of accessory middle renal ducts. It can be divided into complete mediastinum and partial mediastinum. Complete mediastinum is often accompanied by double cervix and uterus. Patients with cervical and uterine malformations are often a factor of infertility. 5. Abnormal development before cloaca separation If the urorectal septum of the cloaca is stagnant, the cloaca will continue to exist, leaving the rectum, vagina and urethra in the same cavity that is open to the outside world. Due to the normal development of genital nodules, the vaginal opening is also close to normal. After introducing the common symptoms of vaginal dysplasia, I believe you must have learned a lot of relevant knowledge that we didn't know before. If you have other questions about abnormal vaginal development, please consult our online experts to get your most satisfactory answer.