Lymphoma commonly appears as a painless lump that persists or increases in size. A doctor should be seen if there is any painless swelling in the neck, armpits or groin with or without persistent fever, drenching sweats or unexplainable weight loss.
There is no specific cause for lymphoma, but it has been closely associated with abnormally decreased immune systems that may be present from birth or associated with viruses such as the AIDS virus.
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