Urachal cyst and urachal fistula
Introduction
Introduction of urachal cyst and urachal fistula Umbilical cysts and urachal fistulas are rare, but it is not uncommon in clinical surgery to find a sinus in the middle of the top of the bladder, or a uterine urethral segment that is not fully locked in the middle of the lower abdomen. Not a clinical problem. If the urinary tract of the embryonic period is not degeneratively locked, the bladder and the umbilicus are connected after birth, which is called umbilical fistula. If both ends are occluded and the lumen remains in the middle, a urachal cyst is formed. If one end is locked, the umbilical sinus or the top of the bladder is formed. Umbilical hernia is more common in men, showing urinary leakage, angiography can be diagnosed, surgical closure of the fistula. The urachal cyst is characterized by a lower abdominal mass that causes abdominal pain or intestinal compression symptoms. Ultrasonography can be performed for resection. basic knowledge The proportion of illness: 0.0005%-0.0007% Susceptible people: no specific population Mode of infection: non-infectious Complications: cellulitis
Cause
Umbilical cyst and urachal fistula
Cause:
The etiology of this disease is that when the embryonic period is 10 to 24 mm, the bladder is still enlarged to the umbilicus, and then the bladder is descending along the anterior abdominal wall. During the descending process, a thin tube is left to communicate with the allantois. Thinning, occlusion, into a fiber cord from the umbilicus to the anterior wall of the bladder, if it is not fully occluded, there is still lumen communication, it becomes a urachal fistula, if the two ends are occluded, the middle part is not fully locked, then there is a cyst Possible.
Prevention
Umbilical cyst and urachal fistula prevention
The main cause of prevention of umbilical infection in children, such as the discovery of children's navel water should be thought of this disease and go to the doctor for treatment, delaying the disease will spread the infection, endangering the lives of children.
Complication
Umbilical cyst and urachal fistula complications Complications cellulitis
Umbilical infection is the most common complication. The urachal cyst is in the middle of the lower abdomen. The cystic mass does not change with the body position. The superficial surface is closely related to the abdominal wall. The wound is delayed and there is an overflow. Sometimes there is an umbilical wheel. Redness and swelling, small muscarm or umbilical stump visible in the umbilical cavity with a small amount of mucus or purulent secretion. In severe cases, there may be symptoms of cellulitis such as redness, swelling, heat, and pain. When the infection is more serious, it can be seen that the umbilical cord is obviously red and swollen and hard, and there are more purulent secretions. The umbilical cord is lightly pressed, and the pus flows out from the umbilicus and has an odor.
Symptom
Umbilical cyst and urachal fistula symptoms Common symptoms Umbilical urinary bladder has a globular mass cyst
Umbilical hernias are characterized by umbilical edema and always have thin secretions. Umbilical cysts appear in the middle of the lower abdomen, cystic mass, and do not change with body position.
Umbilical catheter abnormalities: if the urinary tract of the embryonic period is not degenerated. Then, after birth, the bladder communicates with the umbilicus, which is called urachal fistula. If both ends are occluded and the lumen remains in the middle, a urachal cyst is formed. If one end is locked, the umbilical sinus or the top of the bladder is formed. Umbilical hernia is more common in men, showing urinary leakage, angiography can be diagnosed, surgical closure of the fistula.
Examine
Examination of urachal cysts and urachal fistula
Indigo can be injected into the bladder to make it clear. If the amount of secretion is a viscous liquid, the umbilical hernia may be much larger than the disease and need to be further identified. The urachal cyst is in the middle of the lower abdomen. Sexual mass does not change with body position, and the surface is closely related to the abdominal wall. Ultrasound examination can determine the above characteristics.
Diagnosis
Diagnosis and differentiation of urachal cyst and urachal fistula
diagnosis
Diagnosis can be based on clinical symptoms and laboratory tests.
Differential diagnosis
Umbilical cysts and urachal fistulas need to be differentiated from umbilical hernias. The latter also occurs in the umbilicus, but communicates with the intestines. Therefore, the effluent is feces rather than urine, which can be initially identified according to the appearance of the secretions. Secondly, after the intravenous infusion of the staining agent, if the umbilical part cannot exclude the stained liquid, it is also proved that the umbilical fistula is not. An angiographic examination can show that the contrast agent in the yolk tube enters the intestinal lumen, usually the lower ileum.
