Parastomal Hernia: Symptoms, Prevention and Surgical Options

Around a stoma (colostomy, ileostomy or urostomy) the opening in the abdominal wall can widen over time, allowing intra-abdominal tissue to bulge. This is a parastomal hernia — a common finding in stoma patients, and surgery is not always the first step.

Quick answer

A parastomal hernia appears as a gradually enlarging bulge around the stoma. In patients with no or mild symptoms, observation and adjustment of stoma care are the priority. Surgery is considered when the appliance leaks, the skin is damaged, pain develops or there are signs of obstruction.

Symptoms

• A bulge around the stoma that appears on standing or straining
• Poor appliance fit, frequent leakage and more frequent bag changes
• Skin irritation, redness or sores around the appliance
• Fullness, dragging or pain in the area
• Irregular output, reduced gas passage or abdominal bloating

Who is at higher risk?

• Permanent end colostomy
• Overweight and obesity
• Older age
• Chronic cough, constipation and straining
• Diabetes, corticosteroid use, poor nutrition

Diagnosis and assessment

Diagnosis is made by examining the stoma lying down and standing, with straining. CT may be requested in complex cases to show defect width, hernia contents and any associated midline incisional hernia. Assessment considers not only hernia size but also appliance fit, skin integrity and the impact on daily life.

Prevention

The European Hernia Society guideline discusses prophylactic mesh placement when a permanent end colostomy is created, as an option to reduce parastomal hernia formation in selected patients. It is not mandatory in every patient. Correct stoma care, weight control and treatment of constipation and chronic cough are widely recommended.

Surgical options

• Suture-only repair: limited use today because of the tendency to recur.
• Open mesh repair: reinforcement of the abdominal wall with different mesh planes described.
• Laparoscopic techniques: defined mesh configurations such as Sugarbaker and keyhole in selected patients.
• Stoma relocation: considered in specific situations, particularly when stoma function is impaired.

Risks, evidence limits and recovery

Parastomal hernia repair is one of the technically demanding areas of abdominal wall surgery; recurrence and wound problems are reported more often than after other repairs, and comparative studies vary in follow-up and definitions. After surgery, appliance fit is reviewed with a stoma nurse; heavy lifting is avoided in the first weeks and constipation is prevented. Sudden severe pain, a dark or purple stoma, vomiting or absent output requires emergency assessment. Sudden severe pain at the hernia site, a hard bulge that cannot be pushed back, nausea, vomiting, fever, skin colour change or inability to pass gas or stool requires immediate emergency assessment.

Conclusion

A parastomal hernia is common and does not always require surgery. Symptoms, appliance fit and quality of life drive the decision. If you notice an enlarging bulge around your stoma, arrange a surgical review before problems escalate.