Siyu is two years old, chubby, and has a sweet mouth to call people. He is very good at “reading people’s faces”, he will take the initiative to call out “uncle”, “grandpa”, “auntie “, “Grandma”, very likeable. This day, little Siyu suddenly cried for unknown reasons and pressed his belly with his little hand. After a while, he was playing with himself again, after several repetitions. The local hospital treated him with medication for indigestion and intestinal cramps, but Siyu’s condition was getting worse and worse, and there was mental depression and bloody stools. The mother of Siyu was terrified and took her to the city’s children’s hospital for a checkup, which revealed that Siyu had intestinal stasis. After timely treatment, Siyu was quickly discharged from the hospital. The intussusception can occur throughout the year, but more often in the spring and autumn, probably related to the two seasons of upper whistle infection and lymphadenovirus infection. It is an intestinal obstruction in which a part of the intestinal canal enters into the adjacent intestinal lumen. The incidence of intussusception in infants and young children in China is high, mostly in boys, accounting for about 2/3, mostly occurring within 2 years of age, especially in obese infants aged 4-10 months. 1, why children are prone to intussusception At present, the etiology of intussusception in infants and young children is not clear, may be related to the following factors: (1) the anatomical characteristics of the infant intestine. The infant ileocecal tract is not yet fixed perfect, resulting in the free part of the large, prone to intussusception. In addition, the length of the intestinal canal in children is relatively longer than that in adults, which is 4.5 times longer than that in adults, 8 times longer in newborns, and 6 times longer in infants; (2) disorders of intestinal peristalsis. Due to the sudden change of food varieties, improper addition of supplementary food, change of environment and climate, or diseases such as inflammation, tumor and polyps in the intestine, as well as roundworm disturbance, toxin stimulation, improper use of anthelmintic drugs and diarrhea, etc., the intestinal peristalsis can be disturbed and intussusception can occur. (3) Viral infection. Some scholars believe that the occurrence of pediatric intussusception is related to upper whistling tract infection, adenovirus infection, because adenovirus infection, the ileocecal intestinal wall lymphatic tissue inflammatory proliferation, the adjacent mesenteric lymph nodes also become enlarged, compression of the intestinal canal; at the same time, adenovirus infection, intestinal motility often disorders, so that children are easy to occur intussusception. (4) Due to congenital intestinal malformation or tumor. 2, what are the symptoms of pediatric intussusception intussusception is one of the most common surgical emergencies in infants and children, it starts suddenly, mainly manifested as abdominal pain, vomiting, blood in the stool, abdominal “sausage-like mass” and other symptoms. (1) Abdominal pain: Although the child has abdominal pain, but the mouth will not tell, clinically it can be manifested as sudden onset of crying, leg flexion, pale face. When the abdominal pain is relieved, the child can still play or fall asleep. After repeated episodes, the child becomes gradually worse in spirit, drowsy, pale, depressed or even in shock. (2) Vomiting: Vomiting occurs soon after the onset of abdominal pain, which is more frequent at first and can be reduced later. The vomit is initially milk, milk lumps or food remnants, and later with bile. The child often refuses to breastfeed or to eat. In later stages, when complete intestinal obstruction develops, the vomitus is commonly fecal-like with a foul odor. (3) Jam-like stool: a characteristic of infant intestinal loops. At the beginning of the disease, there may be one to two normal stools, and later on, stools containing blood and mucus, like jam. Most children have these characteristic jam-like stools 4 to 12 hours after the onset of the disease. In a few infants, there is no blood in the stool at the time of presentation, only blood on the gloves during anal examination, and sometimes the head of the stoma can be palpated. (4) Abdominal mass: The intestinal canal is overlapped and therefore locally bulges like a mass. When the child is quiet or asleep, the abdominal wall is relaxed, and a “salami-like” mass can be felt in the abdomen, such as the ileal type, the mass is mostly in the right upper abdomen or the middle of the abdomen, the surface is smooth and slightly movable, when the abdominal pain attacks, the mass is obvious, the intestinal sounds are hyperactive, and there is a “hollow feeling” in the right lower abdomen. “. However, in children with late presentation, the mass is not easily palpable due to obvious abdominal distension or the presence of peritonitis. 3, how to prevent and treat pediatric intussusception After the occurrence of intussusception in children, they should be immediately sent to the hospital for treatment. Otherwise, the blood circulation in the intestinal wall of the trapped part may be obstructed, causing the intestinal wall to ring dead and perforated, leading to peritonitis and even death. The first treatment for intestinal entrapment is reset by warm saline enema. With this method of treatment, the child has less pain and better results, more than 95% can be cured. A few children with heavy symptoms and long duration of illness need surgical reset. If the treatment is timely, intussusception usually does not cause adverse consequences, and there are no sequelae. Although the diagnosis and treatment of intussusception is simple, many children may not have the above-mentioned typical symptoms, but only refuse to eat, vomit, irritability or crying, which is not easy to attract sufficient attention of parents. Therefore, if a healthy infant suddenly appears with unexplained paroxysmal crying, pale face, cold sweat, and mental discomfort, you should think about the possibility of intussusception, and promptly ask a specialist for an examination. To prevent intussusception, usually pay attention to scientific feeding, not too hungry and too full. The addition of complementary foods should be gradual, do not be too hasty; at the same time, we should pay attention to the changes in climate, always increase or decrease clothing; do not abuse deworming drugs without authorization, avoid all kinds of adverse factors that can easily induce intestinal peristaltic disorders. Infants and children who have suffered from intussusception may have a recurrence of the old disease if they are exposed to adverse factors. Therefore, these children should be sent to the hospital immediately if the symptoms of intussusception appear, and should not be careless.