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Definition
Underlying Cause
Anatomy
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Axillary Lymphadenopathy Anatomy
Lymphatic System Anatomy
The lymphatic system performs two major functions:
  • Stores and transports cells that fight infection
  • Removes excess fluid from body tissues
The lymphatic system consists of:
  • Lymph vessels: Images
    • A network of vessels throughout the body that transport white blood cells called lymphocytes.
    • There are two main types of lymphocytes: B-cells and T-cells.
  • Lymph glands: Images
    • The lymph vessels connect in many areas known as lymph nodes.
    • The nodes act as filters to fight infection in the body.
    • Lymph nodes can enlarge in response to inflammation.
    • This can occur due to cancer or an infection nearby the lymph vessels.
Anatomy examples:
  • Areas of lymph nodes in the body Images
  • Areas in the body where lymph nodes can be felt Images
  • Abnormal lymph node cells due to Hodgkin's disease Images
  • Lymphatic system around the armpit and breast Images
  • Lymphatic system in the abdomen Images
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Last Updated: Jun 4, 2008  References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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