See below... Generally speaking, lymphoma is a type of cancer that occurs in lymph nodes and other organs containing lymphoid tissue. Low grade lymphoma is a category that encompasses several types of lymphoma that are not aggressive and usually behave in a mild manner. Many times these low-grade lymphomas are not even treated (watchful waiting) but other times chemotherapy is necessary.
Cancer of lymph cell. There are different types of lymphoma. Low grade lymphomas develop and progress slowly, can be treated but only rarely cured, and are treated with immunotherapy, chemotherapy and or radiation therapy depending on the stage and location of the disease. Living 10 years or more from diagnosis is not unusual. Some patients are not treated at first, and may go years before needing treatment.