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What is lymphadenopathy?

Lymph node enlargement (lymphadenopathy) in the chest is a frequent finding on X-rays and CT scans. There are many reasons for the enlarged nodes that often depend on the patient’s history. Some infections and inflammatory conditions such as sarcoidosis can cause the nodes to be enlarged. Tumors of the chest, such as lung cancer, may also involve the nodes and cause them to become enlarged.