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Lymphoma
Lymphoma Cancer of the lymphoid tissues. Lymphomas are often described as being large cell or small cell types, cleaved or non-cleaved, or diffuse or nodular. The different types often have different prognoses. Lymphomas can also be referred to by the organs where they are active, such as CNS lymphomas, which are in the central nervous system, and GI lymphomas, which are in the gastrointestinal tract. The types of lymphomas most commonly associated with HIV infection are called non-Hodgkin's lymphomas or B cell lymphomas. In these types of cancers, certain cells of the lymphatic. RELATED TERMS-------------------------------------- Cancer Any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream. Cell Fundamental structural unit of all life. The cell consists primarily of an outer plasma membrane, which separates it from the environment; the genetic material (DNA), which encodes heritable information for the maintainance of life; and the cytoplasm, a heterogeneous assemblage of ions, molecules, and fluid. Diffuse Not definitely localized or limited; spread widely through a tissue or substance. Central In anatomy and medicine (as elsewhere), central is the opposite of "peripheral" which means away from the center. Gastrointestinal Having to do with the stomach and intestines. Infection Anything that invades the body and reproduces. Infections can be bacteria, protozoa, fungi, or viruses. Bacteria and fungi are one celled creatures that cause many infections including strep throat, bladder infections, and some lung infections. Fungi cause “athlete’s foot” and thrush, an infection in the mouth. Protozoa are small organisms with many cells that can cause infections in the guts or in the lungs. Most healthy people do not get protozoal infections, but people with suppressed immune systems can. Viruses are not really organisms; they are tiny particles that can live only inside another cell. They reproduce by taking over a cell and causing that cell to make more virus particles, rather than doing what the cell is supposed to do. Viruses cause most colds and flu cases. SIMILAR TERMS-------------------------------------- Lymph Consists primarily of a clear, yellowish fluid and white blood cells. Found in the lymphatic system. Lymph node Any of many small, compact structures lying in groups along the course of the lymphatic vessels and producing lymphocytes. Lymph nodes Small glands clustered in the neck, armpits, abdomen, and groin that supply infection-fighting cells to the bloodstream and filter out bacteria and other antigens. Lymphadenectomy A procedure in which lymph nodes are taken from the body for purposes of diagnosing or staging cancer. Lymphadenitis Inflammation of the lymph nodes. Lymphadenopathy Any disease process affecting a lymph node or lymph nodes. Lymphangiectasia Dilation of the lymphatic vessels; may be congenital or acquired. Lymphangiogram An x-ray that uses a special dye to determine whether cancer has spread to the lymph nodes. Lymphangitis Inflammation of a lymph vessel. Lymphatic system The vessels and structures involved in carrying lymph from the tissues to the blood. Lymphatic Vessels Drain lymph from tissues and returns it to the blood. Lymphazurin Lymphazurin is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): isosulfan blue. Lymphedema Swelling of tissue because of the buildup of too much lymph fluid. Lymphocyte White blood cell. Lymphocytes have a number of roles in the immune system, including antibody production, attacking and destroying cancer cells, and producing substances that kill cancer cells. Lymphokine A cytokine produced by lymphocytes. Lymphokines Soluble substances secreted by lymphocytes, which have a variety of effects on lymphocytes and other cell types. Lymphopenia A reduction, relative or absolute, in the number of lymphocytes in the circulating blood. PREVIOUS AND NEXT TERMS-------------------------------------- Limbic System The part of the brain that is concerned with more primitive impulses and maintaining biological homeostasis. Longevity The percentage of the maximum life span that an organism will reach before it dies. Luteinizing Hormone (LH) The hormone released from the pituitary gland, it stimulates the production of testosterone in males and the production of progesterone in females. This hormone uses cyclic AMP as its second messenger. Lung cancer Is a malignant tumour of the lungs. Most commonly it is bronchogenic carcinoma (about 90%). Lung cancer is the most lethal malignant tumour worldwide. Lung cancers can be divided into two types: small cell lung cancer and non-small cell lung cancer. The cancer cells of each type grow and spread in different ways, and they are treated differently. Non-small cell lung cancer is usually associated with prior smoking, passive smoking, or radon exposure. The main kinds of non-small cell lung cancer are named for the type of cells found in the cancer: squamous cell carcinoma (also called epidermoid carcinoma), adenocarcinoma, large cell carcinoma, adenosquamous carcinoma, and undifferentiated carcinoma. Larynx The larynx is a muscular tube in the neck that allows air to pass from the throat to the trachea (windpipe). The larynx contains the vocal cords, which allow people and animals to make sounds. The larynx has cartilage that opens to allow air into the trachea. Lymphoma Life expectancy The average age at which 50 percent of newborn children survive. Lupus Lupus is a chronic disease in which the body's immune system, instead of serving its normal protective function, forms antibodies and cells that attack healthy tissues and organs. Discoid Lupus affects the skin, causing a rash and scars, most commonly on the face and upper parts of the body. Lustral A commercial name for sertraline hydrochloride, an orally administered antidepressant of the selective serotonin reuptake inhibitor (SSRI) type. Sertraline is used medically mainly to treat the symptoms of depression. Lacunae One of many small cavities uniformly spaced along the lamellae of bones. In living bone, each lacuna contains one bone cell known as an osteocyte. Small canals (canaliculi) radiate from the lacunae and in these are small protoplasmic processes that connect with the osteoblast in other lacunae. We thank you for using the Medical Glossary to search for Lymphoma. If you have a better definition for Lymphoma than the one presented here, please let us know by making use of the suggest a term option. This definition of Lymphoma may be disputed by other professionals. Our attempt is to provide easy definitions on Lymphoma and any other medical topic for the public at large.
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