In folklore, it is often said that “congenital anuslessness” is the result of someone doing something unforgivable and giving birth to a “child without an asshole”. In fact, such a child is not the product of a curse, but a congenital defect. What is congenital anus? Congenital anus, also known as congenital anal atresia, is a relatively common congenital anal disorder, with a prevalence of one in every 3,000 – 5,000 children. Since the cause of this pathogenesis is not very clear, but from the perspective of developmental malformations it is mainly caused by the congenital malformation of the fetal development of the digestive cavity as a result of various factors such as alcohol, drugs and radiation in the daily life of the pregnant woman. Clinically, this disease is still relatively urgent. If the baby does not pass stool within 24 hours after birth, it will soon suffer from vomiting, abdominal distention and other intestinal obstruction, which can be life-threatening in severe cases. Also, congenital anus is often combined with a recto-perineal fistula. The absence of an anal opening often results in the formation of a rectourethral fistula (in male infants) and a rectovaginal fistula (in female infants) from the genitourinary system under pressure, and the infant’s fetal stool is passed in small amounts from these places to help with temporary defecation difficulties, but it does not pass smoothly. However, this condition can be resolved by dilating the fistula. There is another type of fistula where there is no such opening, a completely atretic one, with no anus or even rectum at all, which is relatively more dangerous. The problem of defecation can only be solved by opening a fistula in the abdomen of the child. The opening of the fistula is determined by the child’s condition. Why does congenital anus occur? When the fetus is only 8 mm old in the mother’s womb, the rectum and bladder are connected to each other, and this area is called the anal cavity. When the fetus reaches the seventh week, the anal cavity is divided into two parts: the front part develops into the genitourinary system (bladder, urethra, and vagina), and the back part extends toward the perineum to form the rectum. From this point on, the rectum and bladder become two separate, unconnected organs. In the ninth week of embryonic life, the anal membrane disappears and the anus is gradually formed. When the embryo is in its seventh or eighth week, the anorectal malformation can be caused by abnormal or aborted development for various reasons. 1.Anal or rectal stenosis The anus and rectum are intact and connected, but the lower end of the anus or rectum is narrow and the diameter of the tube is thinner than normal babies, so it is difficult to pass feces. 2.Membranous atresia of the anus The rectum is normal, but there is a depression in the anus, and there is a membranous partition between the anus and the rectum, causing the anus and the rectum not to pass and the stool is not allowed to pass. 3.Anal rectal atresia There is a considerable distance between the lower part of the rectum and the anal skin depression, and it is not possible to defecate and exhaust. This deformity is the most common, accounting for about half of the entire anorectal congenital malformation. 4, lower rectal atresia These newborns have normal anal shape, the anus exists, the anus and the anal sphincter are normal, but there is a different distance between the anus and the rectum, because this interval is high and the anal surface is basically normal, so this type is often neglected. Congenital anorectal malformations can be accompanied by fistulas, which in male infants are mostly recto-vesical, recto-urethral, and recto-perineal fistulas. In female infants, the fistula is usually rectovaginal. When these fistulas are present, they are often overlooked and are only noticed when fecal matter or cloudy urine is found in the urine. These lesions can easily cause cystitis or pyelonephritis. Young mothers should be aware when there are The normal position of the anus has shifted, or there is no anus at the position of the anus, or although the position of the anus is normal in form but the tube diameter is narrow feces can not be discharged, or the anus and rectum are not connected, etc. It is not difficult to find out if you pay attention to it. If a newborn does not have fecal discharge one day after birth, and if he/she finds bloating, vomiting, crying and restlessness when breastfeeding, he/she should pay attention and observe the possibility of anorectal malformation. Congenital anorectal atresia can cause complete low intestinal obstruction, and if not detected or not treated in time, death can occur after six or seven days. Therefore, when babies are born, they should be carefully examined for the presence of anus and how the meconium is discharged. How to treat congenital “anus”? The treatment of this disease has been recorded in Chinese medicine for a long time. The Ming dynasty doctor Sun Zhihong said: “Rarely children are born without a valley (anus), the bowels can not be saved, after ten days will not save, must be cut through with a fine knife, to the hole kind, after the opening of the road, with a fine silk volume such as a small finger, penetration with fragrant oil inserted, so that no longer together, the evening with the muscle dressing self-cure.” 1, the treatment of anal or rectal stenosis can be used to expand the anal method, that is, first with the pinky finger wearing a rubber finger sleeve, coated with lubricant, into the child’s anus, so that the narrow part of the expansion, 1-3 times a day, after a period of expansion can be cured. 2.Treatment of anal membranous atresia The atretic membrane can be cross-cut from the anus, and with anal dilation to avoid scar contraction causing anal stenosis. 3.Treatment of anorectal atresia In order to determine the distance between the blind end of the rectum and the anus, an upside-down X-ray is needed to assist in the diagnosis. If the blind end of the rectum is less than 2CM from the anus (low atresia), anorectoplasty can be performed in the perineum. If it is more than 2CM (high atresia), the child’s general condition can be operated in one stage, that is, one operation is performed in the abdomen and perineum at the same time (called one-stage abdominal perineal anoplasty); when the child’s condition is very poor, colostomy can be used to relieve intestinal obstruction and save the child’s life first, and then other operations can be used according to the situation. 4. Treatment of lower rectal atresia The blind end of the rectum is far from the anus, and often requires a combined abdominal perineal or sacral perineal operation.