Normal lymph nodes in the neck are usually less than 1 cm in length. Infections involving the pharynx, salivary glands, and scalp often cause tender enlargement of neck nodes. Enlarged nodes are common in HIV-infected persons.
Edema is defined as a palpable swelling caused by an increase in interstitial fluid volume. Edema, other than localized edema, does not become clinically apparent until the interstitial volume has increased by 2.5 to 3 liters.
HL is distinguished from other types of lymphoma by the presence of “Reed-Sternberg cells” (named for the scientists who first identified them). Reed-Sternberg cells are usually B cells and have differences and variations to them.
Non-Hodgkin lymphoma (NHL) is a type of blood cancer that affects specialized white blood cells called lymphocytes. Lymphocytes work together with other cells in the immune system to defend the body against invasion by bacteria, viruses, parasites, and other foreign substances
Lymphoma is a cancer of lymphocytes. Lymphocytes are a type of white blood cell that fights infection. Healthy lymphocytes travel around your body in your lymphatic system, which is part of your immune system.
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