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Non-Hodgkin's Lymphoma

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Adult Non-Hodgkin Lymphoma Treatment (PDQ®): Treatment - Patient Information [NCI] - General Information About Adult Non-Hodgkin Lymphoma

Adult non-Hodgkin lymphoma is a disease in which malignant (cancer) cells form in the lymph system.

The lymph system is part of the immune system and is made up of the following:

  • Lymph: Colorless, watery fluid that travels through the lymph system and carries white blood cells called lymphocytes. Lymphocytes protect the body against infections and the growth of tumors.
  • Lymph vessels: A network of thin tubes that collect lymph from different parts of the body and return it to the bloodstream.
  • Lymph nodes: Small, bean-shaped structures that filter lymph and store white blood cells that help fight infection and disease. Lymph nodes are located along the network of lymph vessels found throughout the body. Clusters of lymph nodes are found in the underarm, pelvis, neck, abdomen, and groin.
  • Spleen: An organ that makes lymphocytes, filters the blood, stores blood cells, and destroys old blood cells. It is on the left side of the abdomen near the stomach.
  • Thymus: An organ in which lymphocytes grow and multiply. The thymus is in the chest behind the breastbone.
  • Tonsils: Two small masses of lymph tissue at the back of the throat. The tonsils make lymphocytes.
  • Bone marrow: The soft, spongy tissue in the center of large bones. Bone marrow makes white blood cells, red blood cells, and platelets.

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Anatomy of the lymph system, showing the lymph vessels and lymph organs including lymph nodes, tonsils, thymus, spleen, and bone marrow. Lymph (clear fluid) and lymphocytes travel through the lymph vessels and into the lymph nodes where the lymphocytes destroy harmful substances. The lymph enters the blood through a large vein near the heart.

Because lymph tissue is found throughout the body, adult non-Hodgkin lymphoma can begin in almost any part of the body. Cancer can spread to the liver and many other organs and tissues.

Non-Hodgkin lymphoma in pregnant women is the same as the disease in nonpregnant women of childbearing age. However, treatment is different for pregnant women. This summary includes information on the treatment of non-Hodgkin lymphoma during pregnancy

Non-Hodgkin lymphoma can occur in both adults and children. Treatment for children, however, is different than treatment for adults. (See the PDQ summary on Childhood Non-Hodgkin Lymphoma Treatment for more information.)

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