Stents for a blocked duodenum

The first part of the small intestine is called the duodenum. Pancreatic cancer can block the duodenum. This can make you feel and be sick. A tube called a stent can be put into the duodenum to treat this.

What's in the 'Stents for a blocked duodenum' section?


Key facts

  • The duodenum is the first part of the small intestine. After you eat, food moves from your stomach into your duodenum where it is broken down (digested).
  • Pancreatic cancer can block the duodenum. This happens when the cancer presses on the duodenum and stops the food passing out of the stomach. This is called gastric outlet obstruction.
  • It can make you feel full up, feel sick, vomit large amounts, lose weight and have tummy pain, bloating and cramps.
  • A stent is a tube. It can be used to hold open the duodenum and let the food pass through.
  • Once you have a stent put in, you should start to feel better quite quickly. It should stop you being sick, and you should start to feel like eating again.
  • Treating your symptoms with the stent may mean you can start or continue treatment for the cancer.
  • Putting the stent in takes around 30-40 minutes. You will be given a sedative to make you feel relaxed and sleepy.
  • Sometimes there can be problems with stents including blockages. Less often, the stent may move out of place, you may have some discomfort or you may get an infection.
  • You should be given information to help you with your diet after you have the stent put in. You will need to be careful about what you eat to stop the stent getting blocked.
  • Talk to your medical team about any questions you have. You can also speak to our specialist nurses on our free Support Line.

 What are stents and when are they used?

Stents are tubes. A stent for the duodenum is called a duodenal stent. You may have a duodenal stent put in if your cancer can’t be removed by surgery. If you are having longer term treatment and are well enough, your doctor should consider bypass surgery rather than a stent.

Stents are also used to treat a blocked bile duct – these are called biliary stents.

A diagram of a stent for a blocked duodenum

Questions to ask the doctor or nurse


  • Will a stent improve my symptoms?
  • How quickly will I recover after the stent is put in?
  • Will I need to change my diet once I have a stent?
  • Will I see a dietitian?
  • Will a stent affect future treatment such as chemotherapy?
  • Will a stent mean I can start or continue treatment?
  • Will I feel the stent inside me?
  • Will the stent ever need to be removed?

Advantages and disadvantages of duodenal stents

Advantages

  • The stent should open the blocked duodenum and treat your sickness.
  • You should start feeling better quickly, normally within a couple of days of having the stent put in.
  • Treating symptoms may mean you can start or continue treatment for the cancer, such as chemotherapy.

Disadvantages

  • The stent may get blocked and the symptoms you had before may come back.
  • Some people may still feel sick after having a stent put in. If this doesn’t get better speak to your doctor.
  • There is a small chance of your stent moving after it has been put in. If this happens it may need to be replaced.
  • There is a small risk of complications such as a hole in the duodenum or bleeding. A hole in the duodenum can also cause infection.

How is the duodenal stent put in?

You may go into hospital the day before the stent is put in, or on the day. You will be asked not to eat or drink for at least eight hours before to make sure that your stomach and duodenum are as empty as possible. Tell your doctor or nurse if you take blood thinning medicine or have diabetes, as this might affect your care before the stent is put in.

You will have a sedative, which will make you very sleepy and relaxed. A tube with a camera on the end, called an endoscope, is put in through your mouth and down into the duodenum. A fine wire is then used to guide the stent into place inside the duodenum.

The procedure will take around 30-40 minutes.

What happens afterwards?

Once the sedative wears off, you will usually be able to drink. Once you can drink without problems you will be able to eat. At first you will have softer foods so that the stent does not get blocked. Sometimes it can take a while for your stomach to start emptying properly again. You may be given medicine to help your stomach empty.

You may need to stay in hospital overnight, but this will depend on how quickly you recover. If your stent gets blocked, you may be or feel sick. If this happens after you have left hospital, contact your doctor or nurse. Or go to A&E if you can’t reach them.

Will I feel better?

After the stent has been put in your symptoms should begin to improve. For example, you should stop feeling sick and find it easier to eat.

Some people may still feel sick after having a stent put in. This is because food will move through the stent differently to how it moves through the duodenum. This means food may stay in the stomach for longer. Speak to your doctor if this does not get better. They may give you anti-sickness medicines and suggest changes to your diet.

You will need to be careful what you eat to make sure the stent does not get blocked. If you need advice or are having problems speak to your nurse or dietitian.

Are there any problems with stents?

Blockages

The main problem with stents is that they can get blocked. This can be caused by the cancer growing through the stent or by food building up inside it. If you start feeling or being sick again, speak to your doctor or nurse. Or go to A&E if you can’t reach them. They can check if the stent is blocked. If this happens another stent can be put in to treat the blockage. Your nurse or dietitian should tell you what foods to stop the stent getting blocked.

Read more about eating and diet.

Stent moving out of place

Sometimes stents can move out of place. If this happens the stent is usually removed and a new one put in. Tummy pain or vomiting may be signs that your stent has moved. Speak to your doctor or nurse if you get any of these symptoms. They can decide if the stent needs to be replaced.

Discomfort

Occasionally stents cause discomfort in the upper tummy when they are first put in. This is not common and normally gets better over a few days.

Other possible problems

There are some other possible problems from having a stent put in, but these are very rare. For example, there is a risk of the procedure causing a hole in the duodenum during or after the stent is put in. This can cause bleeding, being sick, or an infection. There is also a small risk of infection caused by the stent getting blocked.

If you have any side effects or unusual symptoms after you have left hospital, phone your nurse or doctor. If you can’t reach them, go to A&E. If you have any questions or worries about having a stent put in, or after the stent has been put in, speak to your medical team.

Read our fact sheets about stents

To read more about stents for a blocked duodenum, download our fact sheet, Stents for a blocked duodenum.

Download the fact sheet

Questions about duodenal stents?

You can also speak to our specialist nurses on our free Support Line with any questions about having a duodenal stent.

Speak to our nurses
A specialist nurse taking a phone call.

Acknowledgements and references


We would like to thank the following people who reviewed this information.

  • Giuseppe Kito Fusai, Consultant HPB Surgeon, Royal Free London NHS Foundation Trust
  • Lena Loia, HPB Clinical Nurse Specialist, Cambridge University Hospitals NHS Foundation Trust
  • Sanjay Pandanaboyana, Consultant HPB and Transplant Surgeon, Freeman Hospital, Newcastle
  • Pancreatic Cancer UK Lay Information Reviewers
  • Pancreatic Cancer UK Specialist Nurses

References

Email us at publications@pancreaticcancer.org.uk for references to the sources of information used to write this information.

Updated October 2023

Review date October 2026