This site has been initiated and developed by Ipsen Ltd.
This site has been initiated and developed by Ipsen Ltd.

Where do NETs start?

A cancer is usually named after the part of the body where it first started to grow. This is known as the primary site or the primary tumour. If the cancer cells spread from the primary site to another part of the body, it is called a secondary cancer or a metastasis.

In NETs, primary tumours can occur almost anywhere in the body but are most commonly found in the gastrointestinal tract (digestive system), pancreas and lungs.

They can also start in other regions, such as the ovaries and testes, and can spread to the liver or bone.

Compared with other cancers, NETs are small and usually grow slowly over a number of years but some NETs can grow faster than others. NETs do not usually cause noticeable symptoms until the tumours have already grown and spread. By the time they are found, more than 50% of NETs will have spread to other parts of the body.

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Find out more about NETs

Diagnosis & Testing

Diagnosing NETs

Find out how NETs are diagnosed and the tests that healthcare professionals may use to monitor NETs

Diagnosis & Testing
Treating NETs

Treating NETs

Read about treatment options for NETs, including surgery, radiotherapy and medications

Treatment Options
FAQs by experts


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This site is intended for a UK audience only. SOM-UK-003737 September 2018