Prostate cancer and the lymph nodes

The lymphatic system

The lymphatic system helps protect us from infection and disease. It is made up of fine tubes called lymphatic vessels. These vessels connect to groups of small lymph nodes throughout the body. The lymphatic system drains lymph fluid from the tissues of the body before returning it to the blood.

What are lymph nodes?

Lymph nodes are sometimes called lymph glands. They filter bacteria (germs) and disease from the lymph fluid. When you have an infection, some lymph nodes may swell as they fight the infection.

Lymph nodes and prostate cancer

If prostate cancer cells spread to the lymph nodes, they usually go to the nodes close to the prostate. You may have a scan to check if the cancer has spread to these nodes.

In early prostate cancer, the cells have not spread to the lymph nodes.

Locally advanced prostate cancer may have spread to the lymph nodes that are close to the prostate.

In advanced prostate cancer, there are usually cancer cells in the lymph nodes close to the prostate and in lymph nodes further away.

About our information

References

Below is a sample of the sources used in our prostate cancer information. If you would like more information about the sources we use, please contact us at cancerinformationteam@macmillan.org.uk

C. Parker, E. Castro, K. Fizazi, et al. Prostate cancer: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up. Annals of Oncology, 2020, Volume 31, Issue 9, p1119-1134. Available from www.esmo.org/guidelines/genitourinary-cancers/prostate-cancer

National Institute for Health and Care Excellence (2019) Prostate cancer: diagnosis and management (NICE guideline NG131). Last updated December 2021 to include Risk stratification for localised or locally advanced prostate cancer. Available at www.nice.org.uk/guidance/ng131

Reviewers

This information has been written, revised and edited by Macmillan Cancer Support’s Cancer Information Development team. It has been reviewed by expert medical and health professionals and people living with cancer. It has been approved by Senior Medical Editors, Dr Jim Barber, Consultant Clinical Oncologist and Dr Ursula McGovern, Consultant Medical Oncologist.

Our cancer information has been awarded the PIF TICK. Created by the Patient Information Forum, this quality mark shows we meet PIF’s 10 criteria for trustworthy health information.

The language we use

We want everyone affected by cancer to feel our information is written for them.

We want our information to be as clear as possible. To do this, we try to:

use plain English
explain medical words
use short sentences
use illustrations to explain text
structure the information clearly
make sure important points are clear.

We use gender-inclusive language and talk to our readers as ‘you’ so that everyone feels included. Where clinically necessary we use the terms ‘men’ and ‘women’ or ‘male’ and ‘female’. For example, we do so when talking about parts of the body or mentioning statistics or research about who is affected.

You can read more about how we produce our information here.