The majority of people with non-Hodgkin's lymphoma seeking medical attention because they felt a mass that has not gone away, are some of the other symptoms of non-Hodgkin's lymphoma, or simply don't feel well and go to the doctor for a medical review.
If you have signs or symptoms that suggest you might have lymphoma, you will perform exams and tests to confirm this and, if so, to determine exactly what is the exact type of lymphoma.