lymphogranuloma venereum An uncommon genital or anorectal (affecting the anus and/or rectum) infection that is caused by a specific type of Chlamydia trachomatis. Abbreviated LGV. Patients with LGV typically have tender lymph nodes in the groin and may recently have had a genital ulcer that resolved on its own. Other patients, in particular those with…
lymphoid Referring to lymphocytes, a type of white blood cell, or to tissue in which lymphocytes develop. Lymphoid tissue is full of lymphocytes, such as a lymph node.
lymphoid tissue The part of the body’s immune system that is important for the immune response and helps protect it from infection and foreign bodies. Lymphoid tissue is present throughout the body and includes the lymph nodes, spleen, tonsils, adenoids, and other structures.
lymphoma A tumor of the lymphoid tissue. The major types of lymphoma are Hodgkin’s disease and non-Hodgkin’s lymphoma (NHL). NHL can in turn be divided into low-grade, intermediate-grade, high-grade, and miscellaneous lymphomas. The course of NHL varies greatly, from indolent to rapidly fatal. Treatment options include chemo and radiation therapy.
lymphoma, AIDS-related A condition that occurs in people with AIDS, in which lymphoid tumors are present, presumably due to immune-system impairment. Treatment is like that of other lymphomas but must take into account the fact that the natural immunity is impaired.
lymphoma, large cell Cancer of the lymphatic tissue that is characterized by unusually large cells when viewed microscopically.
lymphoma, lymphoblastic A rapidly moving, aggressive form of lymphoma that is most often seen in children or young adults. Since it is a tumor consisting of early lymphocyte precursors (lymphoblasts) it is believed to represent the same disease entity as acute lymphoblastic leukemia (ALL). Lymphoblastc lymphoma is a term that has been used in the…
lymphoma, non-Hodgkin’s A form of lymphoma in which malignant tumors arise in the lymphatic system. Abbreviated NHL. Several subtypes of cancer are classified as NHL, all of which originate in and spread via the lymphatic system. Symptoms of NHL depend on the location of the tumor, but can include swollen, but not painful, lymph nodes;…
lymphoproliferative disorders Malignant diseases of the lymphoid cells and of cells from the reticuloendothelial system that usually occur in people with compromised immune systems, such as patients with AIDS and recent transplant patients. Lymphoproliferative disorders can be associated with Epstein-Barr virus infection. See also EpsteinBarr virus.
lymphoreticulosis, benign See cat scratch fever.
-lysis Suffix indicating destruction, as in hemolysis (the destruction of red blood cells with the release of hemoglobin).
-lytic Suffix having to do with lysis, as in hemolytic anemia (anemia due to the destruction of red blood cells).