Non-Hodgkin’s lymphoma is cancer that originates in your lymphatic system, the disease-fighting network spread throughout your body. In non-Hodgkin’s lymphoma, tumors develop from lymphocytes — a type of white blood cell.
Non-Hodgkin’s lymphoma is more common than the other general type of lymphoma — Hodgkin lymphoma. Many different subtypes of non-Hodgkin’s lymphoma exist.
Advances in diagnosis and treatment of non-Hodgkin’s lymphoma have helped improve the prognosis for people with this disease.
Information taken from Mayo Clinic.