Pancreatic cancer is caused by the abnormal and uncontrolled growth of cells in the pancreas – a large gland that's part of the digestive system.
Around half of all new cases are diagnosed in people aged 75 or over. It's uncommon in people under 40 years of age.
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In the early stages, a tumour in the pancreas doesn't usually cause any symptoms, which can make it difficult to diagnose.
It's important to remember that these symptoms can be caused by many different conditions, and aren't usually the result of cancer. But you should contact your GP if you're concerned, or if these symptoms start suddenly.
The first noticeable symptoms of pancreatic cancer are often:
Other possible symptoms of pancreatic cancer include:
You may also develop symptoms of diabetes if you have pancreatic cancer, because it can produce chemicals that interfere with the normal effect of insulin.
There are also a number of different endocrine tumours that cause different symptoms, depending on the hormone the tumour produces.
Cancer Research UK has more information on symptoms of endocrine pancreatic tumours.
It's not fully understood what causes pancreatic cancer, but a number of risk factors for developing the condition have been identified.
Risk factors for pancreatic cancer include:
In about 1 in 10 cases, pancreatic cancer is inherited from a person's parents. Certain genes also increase your chances of getting pancreatitis, which in turn increases your risk of developing cancer of the pancreas.
Cancer Research UK has more information on:
Your GP will first ask about your general health and carry out a physical examination. They may examine your tummy (abdomen) for a lump and to see whether your liver is enlarged.
If your GP suspects pancreatic cancer, you'll usually be referred to a specialist at a hospital for further investigation. You may have either:
Depending on the results of a scan, further tests may include:
A biopsy, where a small sample is taken from a suspected tumour, may also be carried out during these procedures.
In 2015, the National Institute for Health and Care Excellence (NICE) published guidelines to help GPs recognise the signs and symptoms of pancreatic cancer and refer people for the right tests faster.
To find out if you should be referred for further tests for suspected pancreatic cancer, read the NICE 2015 guidelines on Suspected Cancer: Recognition and Referral.
Cancer of the pancreas is difficult to treat. It rarely causes any symptoms in the early stages, so it's often not detected until the cancer is fairly advanced. If the tumour is large, treating the cancer will be more difficult.
If you've been diagnosed with pancreatic cancer, your treatment will depend on the type and location of your cancer, and how far it's advanced. Your age, general health and personal preferences will also be taken into consideration.
The first aim will be to completely remove the tumour and any other cancerous cells. If this isn't possible, treatment will focus on preventing the tumour growing and causing further harm to your body.
The three main treatments for pancreatic cancer are:
Some types of pancreatic cancer only require one form of treatment, whereas others may require two types of treatment or a combination of all three.
Read more about treating pancreatic cancer.
Recovering from pancreatic cancer surgery can be a long and difficult process.
You'll probably experience some pain after your operation. The staff at your hospital will make sure you have adequate pain relief.
After any type of surgery to your digestive system, your bowel will temporarily stop working. This means you won't be able to eat or drink straight away.
You'll gradually be able to sip fluids, before eventually being able to drink and eat more regularly. You may be referred to a dietitian, who can advise you about what foods you should eat following your operation.
After the tumour has been removed, you'll probably have a six-month course of chemotherapy, which greatly increases your chance of being cured. But because cancer of the pancreas is difficult to diagnose and treat, many people don't recover completely.
Treatment can be very effective in helping to ease symptoms and make you as comfortable as possible. Chemotherapy can help shrink your tumour and slow down its growth.