![]() It is normally detected by veterinarians during routine physical examinations of sick cats. ![]() Lymphadenopathy is only seen occasionally. Secondary or metastatic cancers from a primary source Primary cancers of the lymphatic systemĢ. Neoplastic hyperplasia, when affected lymph nodes are enlarged because of infiltration by cancerous cells.ġ.Young cats are more likely to be affected by this type of lymphadenopathy. Reactive hyperplasia or inflammatory lymphadenopathy or lymphadenitis, when the lymph nodes are reacting to a challenge, such as fungal infections, bacterial infections, viral infections (including feline leukemia virus or feline immunodeficiency virus), or immune reactions (like eosinophilic granulomas or non-neoplastic mast cell infiltrations).Lymph nodes become enlarged for two main reasons: Generalized lymphadenopathy means that all (or most) of the lymph nodes in the body are enlarged.Localized lymphadenopathy means that one, or a small number, of lymph nodes are enlarged.What Are Enlarged or Swollen Lymph Nodes (Lymphadenopathy)?Įnlarged lymph nodes (lymphadenopathy or lymphadenomegaly) are diagnosed when one or more lymph nodes is larger than normal. Lymph nodes in cats are tiny (like small frozen peas) until they become active, when they can swell up many times bigger than this. The immune cells work hard to neutralize incoming threats to the health of the body. The lymph nodes are clusters of immune cells (including lymphocytes and white blood cells) which act like biological filters at regular points along the lymph vessels, filtering out debris including bacteria and viruses. These lymph vessels gather and channel loose fluid from the extremities of the body, carrying the fluid back to the chest where it’s fed back into the bloodstream. Lymph nodes are part of the lymphatic system, a network of narrow lymph vessels that parallel the blood vessels in the body. Various internal locations such as the chest (mediastinal) and abdomen (intestines, mesenteric).Lymph nodes, also known as “glands,” are small, solid gatherings of immune cells that are found in many parts of the body, including: But there is one part of the immune system that sometimes becomes very obvious: the lymph nodes. Any duplication or distribution of the information contained herein is strictly prohibited.Most of the immune system works away quietly on its own inside cats, out of sight, producing antibodies, T-cells, and other cells and factors to protect the body against viruses and other threats to health. ![]() No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. ![]() Links to other sites are provided for information only – they do not constitute endorsements of those other sites. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. This site complies with the HONcode standard for trustworthy health information: verify here. Learn more about A.D.A.M.'s editorial policy editorial process and privacy policy. is among the first to achieve this important distinction for online health information and services. follows rigorous standards of quality and accountability. is accredited by URAC, for Health Content Provider (URAC's accreditation program is an independent audit to verify that A.D.A.M.
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