What Is Non-Hodgkin Lymphoma?

Non-Hodgkin lymphoma (NHL) is a type of cancer that originates in the lymphatic system, which is part of the body’s immune system. Unlike Hodgkin lymphoma, NHL encompasses a diverse group of blood cancers that can develop in different types of lymphocytes (B cells, T cells, or NK cells) and can vary significantly in how they behave, spread, and respond to treatment.