Swollen lymph nodes, night sweats and fevers are symptoms of lymphoma. Learn more from MD Anderson, a top-ranked cancer center. The common signs and symptoms of lymphoma can be vague and mimic other illnesses. Learn more about when to see a doctor. Understand the basics of lymphoma, the differences between Hodgkin and non-Hodgkin lymphoma, and why some people may be more susceptible to this type of cancer. Lymphomas are cancers that originate in the lymphatic system. Read on to learn more about their symptoms, types, diagnosis, treatment, and outlook.