What an umbilical hernia is and why it happens
The navel marks the point where the umbilical cord passed through the abdominal wall before birth. It closes after delivery, but it remains one of the thinnest parts of the abdominal wall. When pressure inside the abdomen stays high over a long period, that thin point can stretch, and fat or a loop of bowel is pushed outwards inside a small sac. This is what produces the lump at or beside the navel.
In adults, the usual contributing factors are excess weight, pregnancies, chronic constipation and straining, a persistent cough, work involving repeated heavy lifting, and conditions that cause fluid to collect in the abdomen. Previous abdominal operations and disorders affecting connective tissue also increase the risk. In babies the picture is different: small umbilical hernias frequently close on their own during the first years of life and are usually observed rather than operated on.
- Excess weight and increased intra-abdominal fat
- Pregnancy, particularly multiple pregnancies
- Constipation, straining and long-standing cough
- Jobs involving repeated heavy lifting
- Conditions causing fluid accumulation in the abdomen
What you may notice
The typical sign is a soft bulge at the navel that becomes more obvious on standing, coughing or straining and shrinks or disappears when you lie flat. Small hernias can remain painless for a long time and are noticed only because of their appearance. As the hernia enlarges, a dragging or tight sensation develops around the navel, often more troublesome by the end of the day.
Some patients develop thinning, redness or irritation of the overlying skin, which matters more as the sac grows. Not every swelling near the navel is a hernia — lipomas, skin cysts and separation of the abdominal muscles (rectus diastasis) can look similar. Examination is therefore the first step, with ultrasound or CT used where needed to define the size of the defect and what it contains.
Why it does not resolve on its own
In adults it does not. An umbilical hernia is a genuine opening in the abdominal wall, and muscle cannot close such an opening spontaneously. A binder or support garment may flatten the bulge and make daily life more comfortable, but it does nothing to the defect itself. If anything, ongoing abdominal pressure tends to widen the opening over time, and the larger the hernia becomes, the more extensive the eventual repair.
Because the opening at the navel is often narrow, the possibility of contents becoming trapped should not be dismissed. When fat or bowel cannot be pushed back the hernia is incarcerated; when its blood supply is compromised it is strangulated, and that requires emergency surgery. If any of the following develops, go to the nearest emergency department rather than waiting for a clinic appointment.
- The lump becomes firm and no longer reduces when lying down
- Sudden, severe pain around the navel
- Redness, bruising or warmth of the overlying skin
- Nausea, vomiting or abdominal distension
- Inability to pass gas or stool, or fever
How the operation is performed
Surgical repair is the definitive treatment. For a small hernia, a short incision around the navel gives access to the sac, the contents are returned to the abdomen, and the defect is closed with sutures. In suitable patients this can be done under local or spinal anaesthesia. For larger defects, mesh is used so that the closure is not under tension and the repair holds well over time.
In a laparoscopic repair, a few small ports are used and the defect is reinforced with mesh from inside the abdomen. This may be considered for wide defects, where more than one opening is present, or where a previous repair has failed. Which technique suits you depends on the diameter of the defect, the condition of the abdominal wall, body weight, other medical conditions and previous surgery. The decision is made individually, after examination.
Mesh, in plain terms
Mesh is one of the things patients ask about most. It is a fine surgical net that covers the weak area without pulling tissue tightly together, made from materials with a long history of use in surgery and well tolerated by the body. Above a certain defect size, a repair with sutures alone stays under tension — which tends to be more painful and more likely to give way over time. Mesh removes that tension and supports the closure.
Once in place, your own connective tissue grows through the pores of the mesh and it comes to behave like part of the abdominal wall. It does not need routine removal, it does not interfere with MRI or CT scanning, and it does not trigger security scanners. For very small hernias, and in certain specific circumstances, a direct tissue repair without mesh is preferred instead. Which option is appropriate for you is discussed in detail before surgery.
Recovery and getting assessed
Most patients go home the same day or the next morning, though this depends on the size of the hernia, the technique used and general health, and varies from patient to patient. Swelling, bruising and a tight feeling around the navel are expected in the first few days. Getting up and taking short walks early supports recovery. The interval before heavy lifting, abdominal exercise and demanding sport is set individually by your surgeon.
The durability of any repair is helped by the things that lower pressure inside the abdomen: keeping weight under control, treating constipation, stopping smoking and dealing with a chronic cough. If you have noticed a new lump at the navel, a swelling that is slowly enlarging, or ongoing discomfort there, it is worth having it looked at. For appointments and information call 0538 508 3872, or come to Güneşli Mah. 507 Sok. No: 3, Konak, İzmir.
Frequently asked questions
Will an umbilical hernia close on its own?
In infants, small umbilical hernias often close during the first years of life and are usually observed. In adults they do not close, and the defect tends to widen over time. For an adult, surgical repair is the definitive solution.
Does a small, painless umbilical hernia need surgery?
Watchful waiting is sometimes reasonable for a small hernia causing no symptoms. However, a narrow defect carries a risk of contents becoming trapped, which is taken into account. The decision is made after examination, weighing the size of the defect, your symptoms, your occupation and any other medical conditions.
What if an umbilical hernia appears during pregnancy?
Pressure inside the abdomen rises during pregnancy, so an existing hernia often becomes more obvious. If there is no sign of an emergency, repair is usually planned for after delivery. Signs of incarceration change that assessment, and each pregnancy is considered individually.
Will mesh be used in my repair?
Very small defects can be closed with sutures alone. Above a certain size, mesh is preferred so that the closure is not under tension and the repair is more durable. Which approach is used is determined by examination and by the findings at the time of surgery.
How will my navel look afterwards?
The aim is to preserve the natural appearance of the navel, and the incision is generally placed within or immediately around the umbilical fold. Temporary swelling and colour change during healing are normal; the final appearance settles over some months and differs from person to person.
When is it an emergency?
If the lump becomes hard and will not go back in, or if there is sudden severe pain, colour change of the skin, nausea and vomiting, inability to pass gas or stool, or fever, the hernia may be strangulated. This can require emergency surgery, so attend the nearest emergency department without delay.