Other cancers that have spread (metastasized) to lymph nodes.Leukemia - cancer of your body's blood-forming tissue, including your bone marrow and lymphatic system.Lymphoma - cancer that originates in your lymphatic system.Rheumatoid arthritis - a chronic inflammatory disease targeting the tissue that lines your joints (synovium).Lupus - a chronic inflammatory disease that targets your joints, skin, kidneys, blood cells, heart and lungs.Cat scratch fever - a bacterial infection from a cat scratch or bite.Toxoplasmosis - a parasitic infection resulting from contact with the feces of an infected cat or eating undercooked meat.Certain sexually transmitted infections, such as syphilis.Human immunodeficiency virus (HIV) - the virus that causes AIDS.Skin or wound infections, such as cellulitis.Other possible causes of swollen lymph nodes include: Common infections The most common cause of swollen lymph nodes is an infection, particularly a viral infection, such as the common cold. The site of the swollen lymph nodes may help identify the underlying cause. You may be more likely to notice swelling in certain areas, such as in the lymph nodes in your neck, under your chin, in your armpits and in your groin. Lymph nodes are located in groups, and each group drains a specific area of your body. These specialized cells filter your lymphatic fluid as it travels through your body and protect you by destroying invaders. Inside lymph nodes are a combination of different types of immune system cells. Lymph nodes are small, round or bean-shaped clusters of cells. Seek immediate medical care if you're having difficulty swallowing or breathing. Are accompanied by persistent fever, night sweats or unexplained weight loss.Feel hard or rubbery, or don't move when you push on them.Continue to enlarge or have been present for two to four weeks. ![]() See your doctor if you're concerned or if your swollen lymph nodes: Some swollen lymph nodes return to normal when the underlying condition, such as a minor infection, gets better.
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