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Tissue in the lymph nodes, the tonsils and the spleen where masses of lymphocytes are supported by a network of reticular fibres and cells. A tissue responsible for the production of lymphocytes and antibodies. It occurs as discrete organs, in the form of the lymph nodes, tonsils, thymus, and spleen, and also as diffuse groups…

The making of images of the lymphatic system after having introduced a radio-opaque substance. A diagnostic study in which an isotope (radioactive substance) is injected into the patient’s blood, taken up by the lymphatic system, and visualized through radiographic pictures. The technique of injecting radio-opaque material into the lymphatic system in a particular region of…

A sexually transmitted bacterial infection that causes swelling of the genital lymph nodes and, especially in men, a genital ulcer. Infectious disease, caused by the bacterium Chlamydia trachomatis and transmitted by sexual contact. It is characterized by genital lesions and swelling of lymph nodes in the groin area, headache, fever, and malaise. Treatment is by…

A swelling caused by obstruction of the lymph vessels or unusual development of lymph vessels. Swelling of a part or organ due to obstruction of the lymph vessels draining it. Lymphoedema is an unusual buildup of lymph in the tissues, which happens when the regular flow of lymph is obstructed. Lymphedema can stem from various…

A cyst containing lymph from injured or diseased lymph nodes or ducts.  

An unusual cell which forms in acute lymphoblastic leukaemia as a result of the change which takes place in a lymphocyte on contact with an antigen. An abnormal cell present in the blood and blood-forming organs in a type of leukemia (lymphoblastic leukemia). It has a large nucleus with very scanty cytoplasm and was once…

A mass of lymphoid tissue situated in various points of the lymphatic system, especially under the armpits and in the groin, through which lymph passes and in which lymphocytes are produced. A rounded mass of lymphatic tissue that is surrounded by a capsule of connective tissue. Lymph glands filter lymphatic fluid, and they store lymphocytes…

Any channel carrying lymph.  

A tube which carries lymph round the body from the tissues to the veins. The efferent passage for lymph. A thin-walled vessel that conveys lymph from the tissues. These vessels resemble veins in structure, possessing three layers (intima, media, and adventitia) and paired valves.  

A small lymph node found in clusters in tissues.