A hernia is a bulge that has formed when the internal organs of the body push through a weak spot in the abdominal wall.
Umbilical (paraumbilical) hernia is the bulge that forms near the navel or belly button, when a part of the intestine, fat or fluid is pushed out through a weakened muscle of the abdomen. Umbilical hernia can be found in both children and adults.
It is common in infants and young children, especially in premature babies. The umbilical cord passes through a small muscular opening in the baby’s abdomen during pregnancy. Sometimes the muscles of the umbilical opening fail to close completely after birth. This leads to a weak spot near the navel which allows internal organs of the abdomen to push through it.
People with various health issues that can cause pressure on the abdomen, such as being overweight, multiple pregnancies, having ascites (excessive fluid in the belly), are prone to developing an umbilical hernia. Other situations such as lifting heavy objects, strain on the abdominal muscles during constipation or coughing, and a large prostate gland may cause an umbilical hernia.
The main symptom of an umbilical hernia is the presence of a swelling or bulge near the navel which ranges from about 1 to 5 cm in diameter.
The bulge may be noticeable in babies when they cough, cry or strain the abdomen, and may reduce while lying down or staying calm. This hernia is generally not painful in children. However, umbilical hernias in adults may cause pain, discomfort and increase in size over time.
Umbilical hernias have the risk of getting trapped and strangulated, thereby cutting off the blood supply to the trapped part. This may cause death of the trapped tissue (necrosis) and result in severe complications. If you or your baby experiences the following symptoms, you should immediately consult your doctor:
To diagnose an umbilical hernia your doctor will enquire about your symptoms and your medical history.
Physical examination is generally conducted for determining the size and prominence of the umbilical hernia. Your bulge will be examined when you are standing and lying down. Your doctor may try to reduce the bulge by pushing it inside your abdomen, and will ask you to cough to see if there is any change in the size of the bulge.
Your doctor may also order blood tests and imaging tests to confirm the diagnosis:
In adults, a painful and enlarged bulge is usually treated with surgery. Surgery can prevent further complications of the hernia which can occur due to strangulation.
However, in children, the hernia generally resolves by 18 months. Your doctor may wait for a while before suggesting surgery. Indications for recommending surgical repair in children include:
Your surgeon may perform either an open surgery or a keyhole surgery (laparoscopy) for repairing the umbilical hernia. Laparoscopy may be recommended if the hernia has reappeared after a prior surgery. Surgery can be performed under general or local anesthesia. However, local anesthesia is given to adults with small hernias and in whom general anesthesia may not be safe.
Open surgery: Your surgeon will make a single incision of 2 to 3 cm below the navel and push the protruded part into your abdomen. The weakened spot of the abdominal wall will then be stitched with sutures. In cases of large hernias, your surgeon may place a mesh patch for strengthening the weak abdominal wall. The skin will be sutured with dissolvable stitches and a dressing will be applied to the wounded area.
Keyhole surgery (laparoscopy): Your surgeon will make two to three small incisions away from the bulge and insert a laparoscope (a fiber-optic tube with a light source and camera attached to it) and other special instruments through the incisions. The bulge will be pushed into the abdominal cavity, and the abdominal wall will either be stitched or a mesh will be placed to support the weak part of your abdominal wall.