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Lymphadenopathy or adenopathy is a disease of the lymph nodes, in which they are abnormal in size or consistency.Lymphadenopathy of an inflammatory type (the most common type) is lymphadenitis, [1] producing swollen or enlarged lymph nodes.
Local cancer in many parts of the body can cause lymph nodes to enlarge because of tumorous cells that have metastasised into the node. [33] Lymph node involvement is often a key part in the diagnosis and treatment of cancer, acting as "sentinels" of local disease, incorporated into TNM staging and other cancer staging systems.
Lymph nodes may become enlarged in malignant disease. This cervical lymphadenopathy may be reactive or metastatic. [1] Alternatively, enlarged lymph nodes may represent a primary malignancy of the lymphatic system itself, such as lymphoma (both Hodgkin's and non-Hodgkin's), [6] lymphocytic leukemia, [1] Lymphadenopathy that lasts less than two weeks or more than one year with no progressive ...
Usually this is localized (for example, an infected spot on the scalp will cause lymph nodes in the neck on that same side to swell). However, when two or more lymph node groups are involved, it is called generalized lymphadenopathy. Usually this is in response to significant systemic disease and will subside once the person has recovered.
Experts explain whether or not allergies could be causing swollen lymph nodes in your neck or under your jaw, and when to see a doctor about enlarged glands.
Other related causes such as lymphoproliferative conditions known as Castleman disease, or progressive transformation of germinal centers cause lymph node enlargement. Environmental conditions that may also play a role are animal or insect exposure, chronic medication usage and immunization status.
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