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The lymphatic system is a group of organs, vessels, and tissues that protect you from infection and keep a healthy balance of fluids throughout your body.

The 4 main parts are lymph nodes, spleen, thymus and bone marrow.

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Above is an example of a person with lymphedema. 

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The most common disorders that happen with the lymphatic system are:

1. Swollen lymph nodes (lymphadenopathy)

2. Swelling or accumulation of fluid (lymphedema)

3. Cancers of the lymphatic system (lymphoma)

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A biopsy of the lymph node is done to check the cells in the lymphatic system where lymphoma starts.

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Diagnostic tests available consist of blood testing, physical exams, lymph node biopsy, and imaging tests such as X-rays, CT scans, MRI, and PET scans.

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1. What is the main function of the lymphatic system?

2. What organ is the largest within this system?

3. What are the 4 main organs of the lymphatic system?