10030 Omphalocele

Overview

An omphalocele is a birth defect that happens while a baby is growing in the womb. The baby's abdominal wall does not close completely, so some of the organs, usually the intestines, stay outside the belly and are covered by a thin, transparent sac. This is different from a similar condition called gastroschisis, where the organs are outside without a sac.

No, omphalocele is rare. It occurs in about 1 in every 4,000 to 5,000 births.

Omphalocele affects newborn babies. It is seen slightly more often in boys than girls, and it can occur on its own or as part of a genetic syndrome, such as Beckwith-Wiedemann syndrome or Edwards syndrome. It is not caused by anything the parents did or did not do.

Symptoms

Common symptoms

• Visible sac or bulge at the baby's belly button area
• The sac contains some abdominal organs, usually the intestines
• The belly wall may appear open or split at the center
• Sometimes the sac may look thin and shiny, letting you see the organs inside

Symptoms in children

• In children who had surgery as a baby, there may be long-term effects such as reflux or feeding difficulties
• Some children may have a weaker abdominal wall, needing extra support or physical therapy later
• If the omphalocele was associated with a genetic condition, the child may have developmental delays and need ongoing care

Symptoms in older adults

• Omphalocele is a condition present at birth, so it does not develop in older adults. Adults who had it as a baby may have scarring or related health issues, but the condition itself is not new.

Causes

Main causes

• During early pregnancy, the abdominal muscles and skin fail to close properly around the umbilical cord, leaving an opening in the belly wall.
• The exact cause is often unknown, but it may be related to genetic factors, chromosome changes, or problems in how the fetus develops.
• Some genetic conditions, such as Beckwith-Wiedemann syndrome, are linked to omphalocele.

Risk factors

• Being older during pregnancy, especially over 35
• Having a family history of birth defects or genetic conditions
• Certain chromosome abnormalities, such as trisomy 18 or trisomy 13
• Some environmental exposures during early pregnancy, though these are not yet well understood

When to see a doctor

See a doctor urgently if:

• If you are pregnant and a routine ultrasound suggests an omphalocele, you will be referred urgently to a fetal medicine specialist for a detailed scan and counseling.
• If your newborn shows any signs of breathing trouble, bleeding, or a broken sac, call emergency services right away.

Book a routine appointment if:

• If your baby has a small omphalocele that is being watched, follow the care plan from your surgeon and pediatrician.
• Attend all follow-up appointments after surgery to check healing, feeding, and growth.

Diagnosis

Omphalocele is often found during a routine prenatal ultrasound, usually around 18 to 20 weeks of pregnancy. The doctor may also see an abnormal result on a blood test called alpha-fetoprotein (AFP), which is part of some prenatal screening tests.

Tests that may be done

• Detailed prenatal ultrasound to see the omphalocele and check for other birth defects
• Prenatal blood test for alpha-fetoprotein (AFP) and other markers
• Amniocentesis to look for chromosome problems if the ultrasound suggests concerns
• After birth, physical examination and imaging tests, such as X-rays or CT scans, to confirm and plan surgery

What to expect at your appointment

If an omphalocele is found during pregnancy, you will be referred to a team of specialists, including fetal medicine doctors, surgeons, and neonatologists. They will talk through what to expect and help you prepare for your baby's birth and treatment. After delivery, the baby will be examined immediately and kept warm and protected. Surgery is usually planned within days, once the baby is stable.

Treatment

The main treatment for omphalocele is surgery to place the organs back into the belly and repair the abdominal wall. Before surgery, careful attention is paid to keeping the sac moist and protected from infection. The timing and type of surgery depend on the size of the hernia and the baby's overall health.

Self-care at home

• For parents, follow the surgical wound care instructions given by the hospital team exactly.
• Understand that babies often need formula or breast milk in special ways, and follow feeding advice from your care team.
• Watch for any signs of infection or complications in the weeks after surgery.

Medical treatments

Before surgery, babies may receive fluids through a vein (IV) and antibiotics to prevent infection. The medical team may also use a special ointment on the sac to keep it moist and prevent drying. After surgery, pain relief, nutrition support, and careful monitoring are given as the baby recovers. No specific medication names are listed here, but your doctor will explain any medicines as needed.

When is surgery considered?

Most babies need surgery to repair the omphalocele. If the omphalocele is small, surgery can be done soon after birth. If it is large or the baby is not stable, the surgeon may do a staged repair, where the organs are gradually moved into the belly over several days. In some cases, surgery may be delayed if the baby has other serious health issues.

Living with this condition

After recovery, most babies with a repaired omphalocele grow and develop normally. Regular check-ups with a pediatrician and sometimes a surgeon are needed to monitor growth and make sure the repaired belly wall is strong. Children can usually play, go to school, and take part in normal activities, though vigorous contact sports may require medical advice.

Lifestyle tips

• Go to all follow-up appointments and keep a list of any questions or concerns.
• Encourage healthy physical activity as your child grows, with your doctor's advice.
• If there are feeding or digestive issues, work with a pediatric dietitian or feeding therapist.
• If the omphalocele was part of a genetic condition, follow up with genetics and other specialists as recommended.

Diet and exercise

For babies, feeding may be slower because of reflux or a smaller stomach. Small, frequent feeds often help. As children grow, a normal, balanced diet is usually fine. Exercise is encouraged, but contact sports or risky activities should be discussed with the medical team, especially if the abdominal wall has weak areas.

Mental health and emotional wellbeing

Having a baby with a birth defect can be very stressful and emotional. Parents may feel anxiety, grief, or worry. It is important to take care of your own mental health. If you feel overwhelmed, talk to your GP or a counselor. Remember that asking for help is a sign of strength.

Prevention

There is no known way to prevent an omphalocele. It is a developmental condition that occurs early in pregnancy, often before many women know they are pregnant. Taking a daily folic acid supplement before and during pregnancy is generally recommended for all pregnant women to help reduce the risk of some birth defects, though it is not specifically proven to prevent omphalocele.

Vaccines

Vaccines are not used to prevent omphalocele. However, during pregnancy, staying up-to-date with recommended vaccines, like flu and whooping cough, helps protect the mother and baby from serious infections.

Screening programmes

Prenatal screening tests, including ultrasound and blood tests, can often detect an omphalocele before birth. If you are pregnant, attend your routine prenatal appointments so that any issues can be found early and planning can begin.

Complications

If left untreated

• The sac can rupture, leading to exposure of the organs and a high risk of serious infection or death.
• The abdominal organs may become compressed or damaged if the opening is too tight.
• There is a higher risk of breathing problems because the abdomen may be too small to hold the organs and the lungs may not develop normally.
• Without surgery, the baby may not survive.

Long-term outlook

The outlook for babies with omphalocele is generally good, especially if the defect is small and there are no other major birth defects. With modern surgery, improved intensive care, and careful follow-up, the majority of babies survive and go on to live full, healthy lives. Each case is different, so your healthcare team can give you a more personalised picture based on your baby's specific situation.

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