Lymphoma is a cancer of the lymph nodes and lymphatic system and is treatable. Once cancer cells develop in the lymphatic system, they can easily spread to other tissues and organs. It impacts a type of white blood cells known as lymphocytes. The signs and symptoms of lymphoma are similar to those of viral diseases and the common cold. Some people may not have any symptoms, but may note a swelling of the lymph nodes. Though there no routine screenings for lymphoma, if a person has persistent symptoms, a doctor should be seen at the earliest.