Non-Hodgkin lymphoma

Key facts Non-Hodgkin lymphoma is a cancer that affects your lymphatic system, which is part of your immune system. There are many subtypes of non-Hodgkin lymphoma. Treatment options for non-Hodgkin lymphoma may include chemotherapy, radiotherapy, other medicines or a period of ‘watchful waiting’. What is non-Hodgkin lymphoma? Lymphoma is a cancer of the lymphatic system. The lymphatic system is part of your immune system, which helps protect your body against infections. The lymphatic system is made up of: lymph vessels lymph — clear fluid that contains white blood cells (called lymphocytes) which help your body fight infections lymph nodes Tumours caused by lymphoma usually grow in