Lymph nodes

The lymph nodes, also commonly called lymph glands, are part of the lymphatic system. Swollen lymph nodes are a common symptom of many types of infection and also some non-infectious diseases. Common types and locations are: swollen neck lymph nodes, swollen underarm lymph nodes, and swollen groin lymph nodes. Read more about: Lymph node symptoms, Swollen lymph nodes, Lymphatic Disorders

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Lymph nodes are a communication hub where immune cells sample information brought in from the body. For instance, if adaptive immune cells in the lymph node recognize pieces of a microbe brought in from a distant area, they will activate, replicate, and leave the lymph node to circulate and address the pathogen. Thus, doctors may check patients for swollen lymph nodes, which may indicate an active immune response.

Source: NIAID (NIH)1

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Lymph Nodes: They are oval or bean shaped bodies (1 - 30 mm in diameter) located along the lymphatic system.2

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Lymph Node Capsule: The dense connective tissue that surrounds a lymph node.3


Types may include:4

Types of Lymph Node:

  • Cardiophrenic Lymph Node
  • Distant Lymph Node
  • Interval Lymph Node
  • Lymph Node by Anatomic Site
  • Regional Lymph Node
  • Sentinel Lymph Node
  • Superficial Lymph Node

Categories for Lymph nodes

Category of Lymph Node Capsule:


Anatomy Articles

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Symptom Articles

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Disease and Condition Articles

Read about these related conditions and diseases:

  • Lymphatic disorder: The lymphatic system is a network of tissues and organs. It is made up of ....Lymph - a fluid that contains white blood cells that defend against germs ....Lymph vessels - vessels6 ...

      ... More on Lymphatic disorder  »

Related Symptom Topics

Read more about these related symptoms:

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Related Disease and Condition Topics

Read about these diseases and medical conditions related to Lymph nodes:

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  1. Source: NIAID (NIH): topics/ immuneSystem/ Pages/ overview.aspx
  2. Source: MeSH (U.S. National Library of Medicine)
  3. Source: NCI Thesaurus
  4. ibid.
  5. ibid.
  6. Source: MedLinePlus (NIH): lymphaticdiseases.html

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Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.