(1) Anohymena:During embryonic development, it is caused by the failure of the vaginal bud-like protrusions of the urogenital sinus to be penetrated. Menstrual blood retention in the reproductive tract after puberty. Primary pseudoamenorrhea occurs after the onset of puberty, causing periodic lower abdominal pain and the inability to have sexual intercourse after marriage. The examination shows that the hymen is non-porous and partially full and bulging; bimanual examination of the anus and abdomen reveals that there is a sense of cystic mass in front of the rectum; imaging examinations such as B-ultrasound or CT scan can show images of vaginal uterine effusion. Puncture the thinnest part of the hymen to extract brown bloody fluid.
(2) Vaginal diaphragm:It may be caused by the connection between the tail ends of the paramesonephric ducts on both sides and the urogenital sinus not being penetrated. The vaginal diaphragm is mostly located at the junction of the middle 1/3 of the vagina, but may also be located in other parts. Complete diaphragm is rare and can cause vaginal atresia; there are usually small holes in the center or side of the diaphragm, with varying sizes, affecting the discharge of vaginal fluid and menstrual blood. Infertile patients may have poor discharge of menstrual blood, leading to unclean discharge. Dysmenorrhea and menstrual blood retention may be complicated by infection, resulting in painful sexual intercourse and unsatisfactory sexual life.
(3) Vaginal mediastinum and double vagina: Because after the paramesonephric ducts on both sides merge, the middle septum partially disappears, resulting in an incomplete mediastinum; if the middle septum does not disappear, it results in a complete mediastinum. The mediastinum forms a double vagina. At the same time, it was combined with double uterine malformation. Vaginal septum is often associated with uterine malformations and may lead to infertility; generally it has little impact on sexual life and pregnancy.
(4) Congenital absence of vagina: During the differentiation and formation of sexual organs at about 7 to 10 weeks in the embryonic period, after the paramesonephric ducts on both sides merge, the development of its tail end is blocked or The stagnation fails to develop downward, resulting in congenital absence of a vagina. It is often combined with congenital absence of a uterus or uterine malformation, and occasionally a normally developing uterus. The ovaries originate from the genital ridge, are rarely affected at the same time, and usually develop and function normally. The clinical manifestations of congenital absence of vagina are: primary amenorrhea, cyclic lower abdominal pain, inability to have sexual intercourse after marriage, etc. The female vulva is normal when examined, and there are only shallow pits in the hymen but no vagina; there is no uterus or uterine deformity, and it may be combined with urinary system or bone deformity. Ovarian function measurements were within the normal range.
(5) Vaginal stenosis and adhesions: Congenital vaginal stenosis, such as vaginal diaphragm, mediastinum, etc. Secondary vaginal stenosis and adhesions.
This article is provided by Baidu Reading and is excerpted from \”The Clear \”Conception\” Plan\” Author: Sun Jianqiu and Xie Yingbiao