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Surgery to remove all or part of your stomach

Surgery to remove your stomach is called a gastrectomy.  There are different types of gastrectomy. The type you have depends on the stage and position of your cancer. 

You might have:

  • a subtotal or partial gastrectomy - the surgeon removes part of your stomach
  • a total gastrectomy - your surgeon removes your whole stomach
  • an oesophagogastrectomy– your surgeon removes your stomach and the part of your foodpipe (oesophagus) 

Your surgeon also removes some of the nearby lymph nodes. This helps to reduce the risk of cancer coming back.

Your surgeon might need to remove part of some nearby organs to remove all the cancer. This depends on how far your cancer has grown. 

What type of surgery do I need?

The type of surgery you need for cancer of the stomach depends on:

  • the stage and type of your cancer
  • where it is in your stomach

Operations to remove stomach cancer are major surgery. You have them under general anaesthetic. You will be asleep for the whole operation.

You might need to travel to a specialist centre to have your surgery.

Most people need surgery to remove all or part of their stomach. You won’t need a stoma (bag). 

For very small, early cancers your doctor might be able to remove the lining of your stomach. Your surgeon removes this using a long flexible tube (endoscope). The procedure is called an endoscopic mucosal resection (EMR).

Removing part of the stomach

Your surgeon may remove up to two thirds of your stomach if the cancer is at the lower end of your stomach. This is called a subtotal gastrectomy. How much the surgeon removes depends on the position of the cancer. The surgeon will also remove part of the sheet of tissue that holds the stomach in place (omentum).

You’ll have a smaller stomach afterwards. The valve (cardiac sphincter) between your food pipe (oesophagus) and stomach will still be there.

Diagram showing surgery to remove stomach
Diagram of surgery to remove stomach 1

Removing the stomach

This operation is for when the cancer is in the middle of the stomach. The surgeon removes the whole stomach and all of the omentum. This is a total gastrectomy with a Roux-en-Y reconstruction. Your surgeon rejoins your food pipe (oesophagus) to your small bowel.

Diagram of surgery to remove stomach 2
Diagram of surgery to remove stomach 3

Removing the stomach and part of the food pipe

This operation is for cancer that is in the area where the stomach joins the food pipe (oesophagus).  The surgeon removes your stomach and part of your food pipe. This is an oesophagogastrectomy.

Your surgeon keeps the lowest third of your stomach and makes it into a tube. They rejoin this tube with the remaining part of your food pipe.

Diagram of surgery to remove stomach 4
Diagram of surgery to remove stomach 5

Removing lymph nodes

During your operation the surgeon examines the stomach and surrounding area. They take out all of the lymph nodes from around your stomach and along the main blood vessels to the stomach.

The surgeon takes out lymph nodes in case they contain cancer cells that have spread from the main cancer. Taking the nodes out reduces the risk of your cancer coming back in the future. It also tells your doctor how well chemotherapy has worked, and gives them more information about how far your cancer has spread (the stage).  This can help them make treatment decisions. 

The number of lymph nodes your surgeon removes varies. For people who are less fit the surgeon may only remove the lymph nodes closest to the stomach.

Diagram showing lymph nodes

How your surgeon does your operation

To remove cancer of the stomach you may have open surgery or keyhole (laparoscopic) surgery.  Most people have open surgery.

Open surgery

The type of surgery you have depends on where the cancer is in your stomach. It also depends to some extent on which your surgeon prefers. The types are:

  • subtotal gastrectomy, which means having the operation through a cut in your tummy (abdomen)
  • total gastrectomy, which is when the surgeon makes one cut to your tummy to remove whole of the stomach
  • thoraco-abdominal oesophago-gastrectomy, which means the surgeon has to remove the stomach and food pipe though a cut in your tummy and chest

Depending on which operation you have, you may have:

  • one vertical scar on your tummy (vertical)
  • one scar like an upside down V on your tummy (rooftop)
  • one scar across your chest either on the left or the right (chest scar) and one down the middle of your tummy 
Diagram showing the possible scar lines after surgery for stomach cancer

Keyhole surgery

Keyhole surgery is also called minimally invasive surgery or laparoscopic surgery.  It means having an operation without needing a major cut in your tummy (abdomen).

It is possible for a surgeon to remove the whole of your stomach, or part of it, using keyhole surgery.

You have this type of surgery in specialist centres by a specially trained surgeon. The surgeon makes 4 to 6 small cuts in your tummy. They use a long tube called a laparoscope.

Having keyhole surgery

The laparoscope connects to a fibre optic camera. This shows pictures of the inside of the body on a video screen. The surgeon then uses the other incisions to put the other instruments they use to do the surgery into your body.

Using the laparoscope and other instruments, the surgeon frees the stomach so they can remove either all or part of it. They then either join the remaining stomach to the bowel or your oesophagus to your bowel if they removed your whole stomach. 

UK guidelines for keyhole surgery

The National Institute for Health and Care Excellence (NICE) has guidelines for keyhole surgery. These state that surgeons can use it to remove cancer of the stomach but they must:

  • tell people having the surgery about the risks and benefits
  • monitor people closely
  • collect information about any problems people have and report on them

Researchers are looking into whether keyhole surgery is as good as open surgery.

Last reviewed: 
10 Jan 2020
  • Guidelines for the management of oesophageal and gastric cancer
    WH Allum and others
    Gut. 2011 Nov;60(11):1449–72

  • Gastric cancer: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up 
    E Smyth and others, 
    Annals of Oncology, 2016. Volume 27, Pages v38–v49

  • Laparo-endogastric surgery
    National Institute for Health and Care Excellence (NICE) interventional procedure guidance [IPG25]. January 2012

  • Gastric cancer
    Van Cutsem E and others
    The Lancet, 2016.

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