Dr Harsh Shah
MS, MCh (Surgical Gastroenterology), DrNB (Surgical Gastroenterology)
Registered with Gujarat Medical Council, Reg. No. G-38738
Hernia Surgeon · Dr. Jivraj Mehta Hospital, Vasna, Ahmedabad
In short
- A hernia is a sac of the belly's inner lining pushed through a gap, usually with fat and sometimes bowel inside it.
- What sits in the sac matters more than how big the lump looks, because bowel is what can become trapped.
- The contents are worked out by feeling the bulge as you cough or lie down, and often by an ultrasound or CT scan.
People are often told they have a hernia without being told what the bulge is. It is a fair thing to want to know.
A hernia is not a growth or a lump of tissue. It is something that belongs inside the belly, pushed out through a gap in the wall.
The sac itself
The inside of the belly is lined with a thin, slippery membrane. When a gap opens in the muscle wall, that lining is pushed out through it like the finger of a glove.
That pouch is the sac. It is the part your surgeon finds first at the operation, and it is what gives the bulge its outline under the skin.
What is usually found in the sac, and what it means
What is usually found in the sac, and what it means
| What is in the sac | How often | What it changes |
|---|---|---|
| Fat from around the bowel | Very common | Usually a soft bulge, lower urgency |
| A loop of small bowel | Common in larger hernias | Raises the urgency of repair |
| Large bowel | Less common | Repair planned sooner |
| Part of the bladder | Occasional, some groin hernias | Urine flow is asked about |
| Sac with nothing in it | Seen in small hernias | Often watched rather than hurried |
Want to know what is in your own hernia? Bring any ultrasound or CT report to the visit.
What sits inside it
Most often it is fat from around the bowel, which is soft and moves easily. This is why many hernias feel squashy and slip back when you lie down.
In larger hernias a loop of bowel can come down as well. In some groin hernias part of the bladder lies along the edge of the sac.
Why the contents matter more than the size
A large hernia full of fat can be comfortable for years. A small one with a loop of bowel in it carries the risk that the loop gets stuck in the gap.
If that happens, the blood supply to that loop can be squeezed off. That is the situation every repair is meant to prevent, and it is why the contents guide timing.
How it is worked out before surgery
Your surgeon feels the bulge while you lie down, stand and cough. How easily it goes back, and what it feels like doing so, says a good deal about what is in it.
An ultrasound or CT scan is often added for larger or unclear hernias. It shows the size of the gap and what is sitting in the sac.
What this means for your repair
Ask what was found in your own sac at the follow-up visit. It is written in the operation notes, and it explains much of the advice you are given.
Frequently asked questions
What is actually inside a hernia?
A sac of the inner lining of the belly, usually with fat in it, and sometimes a loop of bowel.
Is my intestine in there?
It may be. Bowel is common in larger groin and navel hernias, and the scan or examination shows it.
Can the bladder be in a hernia?
Occasionally, in some groin hernias. It is one reason your surgeon asks about your urine flow.
Does it matter what is inside?
Yes, more than the size. Bowel in the sac is what can become trapped and cut off from its blood supply.
How is it worked out before surgery?
By feeling the bulge and what happens when you cough or lie down, and often by an ultrasound or CT.
Related pages
The main page on this site is hernia surgery in Ahmedabad. These cover the neighbouring questions.
Where to find us
Dr Harsh Shah, MS, MCh (Surgical Gastroenterology), DrNB (Surgical Gastroenterology)
Dr. Jivraj Mehta Hospital, Vasna, Ahmedabad
Bring your reports. Second opinions are welcome.