Umbilical ureteral remnants are umbilical ureteral cysts presenting as cystic masses in the lower abdomen medially, not changing with body position and superficially located in close relationship to the abdominal wall. Large umbilical ureteral cysts resemble intra-abdominal tumors and can compress the intestine, causing abdominal pain and other symptoms. They can also become abscesses due to secondary infection. Both abscesses or cysts can rupture and perforate outside the abdomen, or rupture into the bladder or into the abdominal and pelvic cavities. According to clinical examination, superficial cystic swellings in the subumbilical region vary in size, with the larger ones being palpable and mostly asymptomatic. In the case of secondary infection, a local inflammatory response is seen, and the diagnosis can be clearly established by combining ultrasound, CT, cystography and other imaging examinations. The following diseases may also be the cause of umbilical ureteral remnants: 1, umbilical bulge – giant tongue – giant body syndrome Umbilical bulge – giant tongue – giant body syndrome (Exomphalosmacro-Glossia-Gigantism Syndrome) also known as neonatal hypoglycemia – giant tongue – visceral hypertrophy – umbilical bulge syndrome, neonatal hypoglycemia with visceral hypertrophy – giant tongue – cerebellar syndrome. The syndrome was first described by Beckwith in 1963, so it was called Beckwith syndrome, and in 1964, Weidemann reported the occurrence of the syndrome in a family of three siblings. Therefore, it is also called Beckwith-Weidemann syndrome. Umbilical ureteral cysts and umbilical ureteral fistulas are relatively rare. However, it is not uncommon to find a curtain-shaped hollow in the top of the bladder or an umbilical ureteral segment with incomplete atresia in the lower abdomen during clinical surgery. Of course, none of these cases is a clinical problem. 3.Prolapse of cord When the fetal membranes rupture, the umbilical cord prolapses below the prepubic area and enters the vagina through the cervix, or even shows up in the vulva through the vagina. Presentation of umbilical cord, also known as occult cord prolapse, is when the umbilical cord is located in front of or to the side of the fetal first dew when the membranes are not broken. The incidence is 0.4% to 10%. The umbilical cord prolapse is extremely harmful to the fetus, because the umbilical cord is squeezed between the first dew and the pelvic wall during contraction, resulting in obstruction of the umbilical cord blood circulation, fetal hypoxia, and serious intrauterine distress, and if the blood flow is completely blocked for more than 7-8 minutes, the fetus will die of suffocation rapidly. 4.Infant umbilical hernia A hernia that protrudes from the umbilicus is called an umbilical hernia. Clinically, there are two types of umbilical hernias: infantile and adult umbilical hernia. Smaller umbilical hernias, such as those less than 1.5 cm in diameter, can mostly heal themselves within 2 years of age as the abdominal wall strengthens with development. If the umbilical hernia does not heal itself after 2 years of age, the child should be treated surgically. 5.Umbilical omphalomesenteric duct polyp Umbilical omphalomesenteric duct polyp is rare. They are seen at birth or occur in children and appear as bright red polyps with a diameter of 2 to 20 cm and a central depression.