Parastomal Hernia

A parastomal hernia happens when tissue pushes through weak abdominal (belly) muscles near your stoma. It’s a type of incisional hernia. That means it occurs at the site of abdominal surgery. To create a stoma, a hole must be made in your abdominal wall for a loop of intestine to pass through. Over time, that hole can become wider. That allows other loops of intestine or fat to push through and cause a bulge.

Parastomal hernias are one of the most common complications after ostomy surgery. Studies suggest that up to half of all people develop one after the procedure.

Some parastomal hernias are small and don’t cause problems. But others can affect comfort, pouch fit and quality of life. They can cause a visible bulge around your stoma. They may make it harder to manage your ostomy bag.

Parastomal hernia symptoms

Some parastomal hernias don’t cause symptoms. Others can range from mild to more disruptive. Common symptoms include:

• A visible bulge near the stoma
• Swelling that may get larger when you stand or cough
• Belly pain, cramping or discomfort
• Back pain
• A feeling of heaviness or tightness around the stoma
• Changes in how much waste comes out
• Skin irritation around the stoma

Parastomal hernia causes

A parastomal hernia can develop because you need an opening in your abdominal wall to create a stoma. That opening creates a natural weak point in your muscle. Over time, pressure inside your belly can push tissue through that weakened area, creating a bulge. Muscle strength at the stoma site can’t fully withstand the internal pressure.

Anything that increases pressure inside your belly can lead to it, including:

• Heavy lifting
• Chronic coughing
• Straining from constipation
• Vomiting
• Fluid buildup in your belly

Risk factors

Certain factors make you more likely to develop a parastomal hernia. These include:

• Obesity (specifically, the size of your waist)
• Age 60 or above
• Weak belly muscles
• Poor wound healing
• Infection after surgery
• Emergency surgery
• Large stoma opening
• COPD
• History of abdominal hernias
• Weight gain after ostomy surgery
• Malnutrition
• Chronic steroid use

Complications of parastomal hernia

Many parastomal hernias remain mild. Most people with the condition live with it for a while before they notice symptoms. But in some cases, symptoms start to develop, and complications can happen. These include:

• Worsening pain
• Increasing bulge size
• Trouble fitting or sealing your pouch
• Frequent stoma leaks
• Bowel blockage
• Incarceration (when your intestine becomes trapped)
• Strangulation (when the blood supply to your intestine is cut off)

Strangulation is a medical emergency. It’s rare but serious. It can cause:

• Sudden severe pain
• Tenderness
• Nausea
• Vomiting
• Less poop or pee coming out of the stoma
• Color changes in the stoma

If you have signs of strangulation, seek immediate medical care.

How doctors diagnose a parastomal hernia

Your healthcare provider will ask you about your symptoms and do a physical exam. They can usually diagnose the condition based on these factors.

But if you have symptoms of a blockage or another complication, they may order a CT scan. Imaging can help rule out other conditions or show if there’s anything else affecting the hernia.

If your provider is planning surgery, they may want a CT scan. This is to see the location of the stoma in relation to the hernia defect.

How is a parastomal hernia repaired?

Treatment depends on your symptoms and their severity. Most people don’t have symptoms. If you do have symptoms, they’re usually mild. Management of a parastomal hernia in these cases involves nonsurgical methods. For a more severe case, you may need surgery.

Nonsurgical management

Nonsurgical options may include:

• Working with an ostomy nurse to improve pouch fit
• Using support belts or garments
• Managing your weight
• Avoiding heavy lifting
• Treating chronic cough or constipation

Parastomal hernia support belts may help reduce bulging. They may also improve the fit of the stoma. But comfort and proper fit are important. Not everyone tolerates support belts well. Your healthcare provider or ostomy nurse can help you figure out whether a belt may work for you.

Surgery

Your provider may recommend hernia repair surgery if you have ongoing pain, a bowel blockage or frequent stoma problems. There are several surgical approaches. The right option depends on your anatomy, your overall health and your surgeon’s preference. The main options include:

• Primary repair: Primary repair is the simplest technique. Your surgeon closes the hernia opening by stitching your muscle edges back together with permanent sutures. This method creates tension on already weakened tissue. So, there’s a high risk of the hernia returning.
• Mesh repair: In this procedure, your surgeon places a surgical mesh over or under the hernia defect to strengthen your abdominal wall. The mesh acts like a patch. It reduces tension on the repair and lowers the risk of the hernia returning. This is the most common approach.
• Stoma relocation: In the past, surgeons sometimes moved the stoma to a new location on your belly. They rarely use this technique anymore. They typically reserve the relocation method for complex cases when they can’t repair the original stoma site successfully.

Parastomal hernia repair recovery time

Recovery time depends on the type of surgery and your overall health. Full recovery may take four to eight weeks or more. Your provider may recommend:

• Avoiding heavy lifting
• Gradually increasing activity
• Wearing a support garment during healing
• Working with an ostomy nurse to change your pouching system

Even after repair, the hernia can return. Following your provider’s instructions carefully after surgery may help reduce the risk of it coming back.

When should I see my healthcare provider?

Contact your provider if you notice:

• A new or growing bulge near the stoma
• Sudden severe pain
• Nausea or vomiting
• No waste coming out
• Color changes in the stoma

Severe pain with less waste or color change could signal a strangulated hernia. You need immediate medical attention.

What can I expect if I have this condition?

Parastomal hernias are common after ostomy surgery. Many develop within the first year. Some remain mild. But others can affect comfort, pouch fit and daily activities.

The good news is that many cases are manageable without surgery. Work closely with your healthcare providers, including an ostomy nurse, to find strategies that support comfort, independence and quality of life.

If symptoms worsen or complications develop, surgical options are available. The best approach depends on your overall health, symptoms and personal goals.

How to prevent parastomal hernia

There’s no guaranteed way to prevent a parastomal hernia. But certain steps may reduce your risk.

Before surgery:

• Make sure your provider properly marks the stoma site.
• Learn about wound healing and ostomy care from an ostomy nurse.

After surgery:

• Avoid heavy lifting while healing.
• Maintain a weight that’s healthy for you.
• Manage chronic cough or constipation.
• Follow your provider’s guidance to gradually strengthen your core muscles.

The chances of developing a parastomal hernia go down if you understand how to take care of the stoma. Also, it’s important to listen to your provider’s recommendations.