What is Lymphoma?  When the white blood cells known to be the fighter cell of the body develop cancer is termed as lymphoma. It is a type of cancer starts in the white blood cells, or lymphocytes. As it is present in the bloodstream, it can spread, or metastasize, to different parts of the body. It is one of the most common cancers in children age group between 15-24 ages but it is not limited to a particular age. What are the different types...