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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «L»:

  1. Lyme disease Lyme disease
    Lyme disease: Lyme disease is a bacterial illness caused by a bacterium called a "spirochete." Lyme disease is spread by ticks when they bite the skin. Lyme disease can cause abnormalities in the skin, joints, heart and nervous system. Interestingly, the disease only became apparent in 1975 w...
  2. Lymph Lymph
    Lymph: An almost colorless fluid that travels through vessels called lymphatics in the lymphatic system and carries cells that help fight infection and disease....
  3. Lymph gland Lymph gland
    Lymph gland: See Lymph node....
  4. Lymph node Lymph node
    Lymph node: Also sometimes referred to as lymph glands, lymph nodes are small rounded or bean-shaped masses of lymphatic tissue surrounded by a capsule of connective tissue. Lymph nodes are located in many places in the lymphatic system throughout the body. Lymph nodes filter the lymphatic fluid ...
  5. Lymph node, sentinel Lymph node, sentinel
    Lymph node, sentinel: The first lymph node ("gland") to receive lymphatic drainage from a tumor. Which lymph node is the sentinel node for a given tumor is determined by injecting around the tumor a tracer substance that will travel through the lymphatic system to the first draining (sentinel) nod...
  6. Lymphadenitis, regional Lymphadenitis, regional
    Lymphadenitis, regional: Cat scratch disease, a mild flu-like infection, with swollen lymph nodes (lymphadenitis) and mild fever of short duration, due to cat scratches, especially from kittens. There is usually a little bump (a papule) which may be pus-filled (a pustule) at the site of the scratch....
  7. Lymphadenopathy Lymphadenopathy
    Lymphadenopathy: Abnormally enlarged lymph nodes. Commonly called "swollen glands." The term "lymphadenopathy" is not as tough as it looks. It is made up of three words: lymph + adeno- (meaning gland) + -pathy (meaning disease) = lymph gland disease. Since most diseased lymph nodes are enlarged, the...
  8. Lymphadenopathy virus Lymphadenopathy virus
    Lymphadenopathy virus: Another name for the human immunodeficiency virus (HIV), the cause of AIDS. HIV has also been called the human lymphotropic virus type III and the lymphadenopathy-associated virus and the lymphadenopathy virus. No matter what name is applied, it is a retrovirus. (A re...
  9. Lymphadenopathy-associated virus Lymphadenopathy-associated virus
    Lymphadenopathy-associated virus: Another name for the human immunodeficiency virus (HIV) that causes AIDS. Please see: Lymphadenopathy virus....
  10. Lymphangiogram Lymphangiogram
    Lymphangiogram: X-rays of the lymphatic system. A dye is injected to outline the lymphatic vessels and organs. ...
  11. Lymphangioleiomyomatosis Lymphangioleiomyomatosis
    Lymphangioleiomyomatosis: A lung disease characterized by an unusual type of muscle cell that invades the tissue of the lungs, including the airways, blood vessels, and lymph vessels. Over time, these muscle cells form into bundles and grow into the walls of the airways and blood and lymph vessel...
  12. Lymphangioma Lymphangioma
    Lymphangioma: A structure consisting of a collection of blood vessels and lymph vessels that are overgrown and clumped together. Depending on their nature, these structures may grow slowly or quickly. They can cause problems because of their location. For example, a lymphangioma around the voicebox ...
  13. Lymphangitis Lymphangitis
    Lymphangitis: The red streaking and gland (lymph node) swelling in the area of an injury especially on the extremities. It is usually caused by a bacterial infection with Streptococcus. The bacteria enter the body through a cut, scrape, bite or wound of some sort. The bacteria can get into the ...
  14. Lymphatic Lymphatic
    Lymphatic: 1. One of the lymphatics, vessel that convey the lymph fluid. 2. Pertaining to the lymph, lymphoid tissue, or lymphocytes. 3. Lacking energy. Sluggish. From the Latin lympha (water or water goddess), from the Greek nymphe (nymph)....
  15. Lymphatic edema Lymphatic edema
    Lymphatic edema: See: Lymphedema>....