Anal Fistula Symptoms: Is Persistent Pus, Blood or Discharge a Sign That You Need Surgery?

Medicine Made Simple Summary

A stoma is a surgically created opening on the abdomen that allows stool to leave the body through a pouch instead of passing through the anus. A colostomy connects the colon to the skin, while an ileostomy connects the small intestine to the skin. A stoma may be temporary when the bowel needs time to heal after surgery, infection or injury. It may be permanent when the rectum or colon cannot safely be used or has been removed. Whether you need one depends on your disease, surgery and overall health.

Introduction

One of the biggest fears patients have before colorectal surgery is hearing the words “stoma,” “colostomy” or “ileostomy.”

Many people immediately imagine that they will permanently live with a bag attached to their abdomen. They may worry about how they will work, travel, sleep, exercise or spend time with family. Some are also concerned about how a stoma will affect their appearance and confidence.

These concerns are completely understandable.

However, having a stoma does not always mean that it will be permanent.

In many colorectal operations, a stoma is created temporarily to protect the bowel while it heals. In other situations, a permanent stoma may be necessary because part of the bowel or rectum has been removed or cannot safely be used. (Cleveland Clinic)

Understanding why a stoma is created, what determines whether it can later be reversed and what daily life with a stoma is actually like can make the decision much less frightening.

What Is a Stoma?

A stoma is a surgically created opening on the abdomen through which waste leaves the body.

Normally, stool travels through the small intestine, colon and rectum before leaving through the anus. When part of this pathway needs to be removed, repaired or temporarily rested, the surgeon may create another route.

The intestine is brought through an opening in the abdominal wall and attached to the skin. This opening is called a stoma.

Stool then passes through the stoma into a specially designed pouch attached to the abdomen. (NHS)

The stoma itself does not have the same sensation as normal skin, and it does not have a muscle that allows you to control when stool comes out. The pouch collects the output securely until it is emptied.

What Is the Difference Between a Colostomy and an Ileostomy?

The main difference is which part of the intestine is connected to the abdominal wall.

• A colostomy uses the colon, which is the large intestine.
• An ileostomy uses the ileum, which is the final part of the small intestine. (Cleveland Clinic)

This difference matters because the colon normally absorbs water from digestive waste.

As a result, stool from a colostomy is often more formed, particularly when the stoma is made from the lower part of the colon.

Output from an ileostomy is generally softer or more liquid because it leaves the body before passing through the colon. This also means that people with an ileostomy need to pay particular attention to fluid and electrolyte balance. (NHS)

Neither type is automatically better.

The choice depends on the disease and the operation being performed.

Why Would Someone Need a Stoma?

A stoma may be necessary for several reasons.

• One common reason is colorectal cancer.
• Another reason is that the bowel needs time to heal after surgery.
• Stomas can also be used in conditions such as diverticulitis, inflammatory bowel disease, bowel obstruction or bowel perforation.

If a tumour involves part of the colon or rectum, the affected bowel may need to be removed.

If two sections of bowel have been joined together, the surgeon may create a temporary stoma to divert stool away from that new connection. This can give the bowel a better chance to heal and may reduce the consequences of a leak. (Cleveland Clinic)

Sometimes the decision is planned before surgery. In an emergency, the surgeon may need to create a stoma unexpectedly because it is the safest option.

Why Would a Surgeon Create a Temporary Stoma?

A temporary stoma is usually created because the bowel needs protection or time to heal.

Imagine that a surgeon removes a diseased section of the rectum and reconnects the healthy bowel. The new connection needs time to heal.

Passing stool through that area immediately may increase the consequences if the connection does not heal properly.

A temporary ileostomy can divert stool away from the surgical site while healing takes place. Later, if the bowel has healed and the patient's condition is suitable, the stoma may be reversed. (Cleveland Clinic)

This is one reason patients undergoing rectal surgery may be told that they might wake up with a temporary stoma even when the surgeon expects to reconnect the bowel.

Does a Temporary Stoma Always Get Reversed?

No.

This is an important distinction.

A surgeon may create a stoma with the intention of reversing it later, but reversal is not guaranteed.

The decision depends on:

• how well the bowel has healed
• whether the underlying disease is controlled
• the patient's overall health
• whether another operation would be safe

Before reversal, the surgeon may perform tests to confirm that the bowel connection has healed properly and that the remaining bowel and anal muscles can function adequately. (Cleveland Clinic)

Sometimes additional cancer treatment, infection, inflammation or other health problems can delay reversal.

In some situations, the safest decision may ultimately be to keep the stoma.

When Is a Stoma More Likely to Be Permanent?

A permanent stoma may be required when the normal route for passing stool cannot safely be restored.

This can happen when the rectum or anus has to be removed as part of cancer treatment or when severe disease has permanently damaged the bowel.

Certain patients with inflammatory bowel disease may also require permanent diversion depending on the operation and disease severity.

A permanent colostomy may also be created after some emergency operations where reconnecting the bowel immediately would be unsafe.

The exact decision depends on:

• the disease
• the location of the problem
• how much bowel needs to be removed

What Happens During Stoma Surgery?

Creating a stoma is usually part of a larger colorectal operation rather than a completely separate procedure.

The surgeon identifies the appropriate section of bowel and brings it through a carefully selected opening in the abdominal wall.

The intestine is then secured to the skin to form the stoma.

A pouching system is placed over the stoma to collect stool.

The stoma may initially look swollen and bright red or pink. This can be normal immediately after surgery. It often becomes smaller as postoperative swelling settles. (NHS)

A specialist stoma nurse usually helps patients understand how to empty the pouch, change it and protect the surrounding skin.

Will You Know Before Surgery If You Need a Stoma?

In planned surgery, your surgeon should discuss the possibility with you before the operation.

Sometimes the surgeon knows in advance that a stoma will be required.

In other cases, the surgeon may hope to avoid a stoma but explain that one could become necessary depending on what is found during the operation.

This is particularly important in complex colorectal cancer or emergency surgery.

Some hospitals arrange pre-operative appointments with a stoma-care nurse. The nurse may discuss what living with a stoma involves and identify an appropriate location for the stoma on the abdomen. (Frimley Health NHS Foundation Trust)

Understanding this possibility before surgery can make the experience less shocking if a stoma is ultimately created.

What Is Life Like With a Stoma?

The first few weeks can require adjustment.

You have to learn how your pouch works, how often it needs to be emptied and how to protect the skin around the stoma.

You may also initially feel uncomfortable looking at the stoma.

These feelings are common.

Over time, stoma care usually becomes part of a routine. Many people with permanent or temporary stomas return to:

• work
• travel
• exercise
• social activities

(Cleveland Clinic)

A stoma does not automatically prevent you from living an active life.

The pouching systems used today are designed to be discreet and secure when correctly fitted.

Can You Eat Normally With a Stoma?

Diet after stoma surgery depends on:

• the type of stoma
• your underlying condition
• how your bowel responds

Initially, your diet may be simpler while your digestive system recovers. Foods can then be introduced gradually.

With an ileostomy, fluid intake is particularly important because stool bypasses the colon and can contain more water. Very high output can increase the risk of dehydration.

Your stoma nurse or dietitian can help you understand which foods are suitable during recovery and how to recognize foods that increase gas, odour or output.

Over time, many people can return to a broad and enjoyable diet.

Can You Exercise With a Stoma?

Yes, in most cases.

Walking is usually encouraged during recovery, and activity can gradually increase as your strength returns.

After the abdominal wall has healed, many people return to exercise and sports.

However, heavy lifting may need to be introduced gradually because there is a risk of developing a parastomal hernia, which is a weakness around the stoma.

Your surgeon or stoma nurse can advise you about when and how to restart specific activities.

Can You Travel With a Stoma?

A stoma does not automatically prevent travel.

Once you have recovered and feel confident managing your pouch, you can generally travel.

Planning is important.

• Carry enough stoma supplies for the entire trip and keep additional supplies with you in case of delays.
• If travelling by air, keeping essential supplies in your hand luggage is sensible.
• It can also help to know where medical facilities are located at your destination.

With preparation, a stoma can become part of your normal travel routine.

When Is Stoma Reversal Considered?

Reversal is considered when the surgeon believes the bowel has healed and that reconnecting it is safe.

The timing varies considerably.

Cleveland Clinic notes that ostomy reversal is often considered around three to twelve months after the original surgery, although the timing depends on the individual condition and recovery. (Cleveland Clinic)

For some patients, reversal may happen earlier or later.

Before proceeding, the surgeon may assess:

• the bowel connection
• remaining bowel
• anal function

Your general health also matters because reversal is another surgical procedure and therefore carries its own risks.

What Happens During Stoma Reversal?

During reversal, the surgeon reconnects the bowel and closes the opening in the abdominal wall.

If you have a temporary ileostomy, the small intestine is reconnected so that stool can once again travel through the colon and rectum.

After recovery, you should no longer need the stoma pouch.

However, bowel movements may not immediately return to your previous pattern.

You may initially experience:

• frequent stools
• urgency
• looser bowel movements

This can be particularly noticeable after rectal surgery because the rectum may have been shortened or altered.

Your bowel may take time to adapt.

Why Might Reversal Not Be Possible?

Several factors can prevent reversal.

• The original disease may still be active.
• The bowel connection may not have healed adequately.
• The anal muscles may not function well enough to provide reliable bowel control.
• You may have other medical problems that make another operation too risky. (Cleveland Clinic)

For cancer patients, additional treatment or disease recurrence may also influence the decision.

This is why doctors usually describe a stoma as “potentially reversible” rather than guaranteeing that it will definitely be removed.

What Questions Should You Ask Your Surgeon?

If a stoma has been discussed, ask:

• whether it is expected to be temporary or permanent and why
• what factors will determine whether reversal is possible
• whether you are likely to have a colostomy or ileostomy and where the stoma will be located
• how long you may need the stoma and what tests will be required before reversal
• about diet, exercise, work, travel and sexual activity after surgery

If you are worried about managing the pouch, ask to meet a stoma-care nurse before surgery.

Understanding the practical side of stoma care can reduce much of the fear associated with the word “bag.”

Final Thoughts

Being told that you may need a colostomy or ileostomy can be frightening, but a stoma is not necessarily a permanent change.

In many colorectal operations, a temporary stoma is created to protect the bowel while it heals. In other cases, a permanent stoma is necessary because the normal route for passing stool cannot safely be restored.

A colostomy uses the colon, while an ileostomy uses the end of the small intestine. The type of stoma affects the consistency of output and the kind of care you need. (NHS)

Whether a stoma can eventually be reversed depends on:

• the original disease
• the type of surgery
• bowel healing
• anal function
• your overall health

Most importantly, having a stoma does not mean that life has to stop.

With appropriate training and support, many people return to work, travel, exercise and normal social activities. (Cleveland Clinic)

If you are preparing for colorectal surgery, understanding why a stoma might be needed and what determines its permanence can help you make informed decisions and approach surgery with greater confidence.

Call to Action

If your colorectal surgeon has discussed the possibility of a colostomy or ileostomy, ask for a clear explanation of:

• why it may be needed
• whether it is expected to be temporary
• what would be required for reversal

Speaking with a colorectal surgeon and specialist stoma nurse before surgery can help you understand the procedure, prepare for recovery and feel more confident about managing life with a stoma if one becomes necessary.