What is Lymphoma?

Understanding Lymphoma

Lymphoma is a cancer of the lymphatic system, which is part of the body’s immune defense. It occurs when white blood cells (called lymphocytes) grow abnormally and form tumors. There are more than 100 subtypes of lymphoma, most commonly classified as either Hodgkin lymphoma or non-Hodgkin lymphoma. This section will help you understand what lymphoma is, how it’s diagnosed, and where to find support as a patient or caregiver.

Microscopic image of lymphocytes, the white blood cells involved in lymphoma, a type of blood cancer.

Blood cancers, including lymphoma, are extremely diverse and can involve a variety of treatment options, often in combination.

Diagram of the human lymphatic system highlighting key areas affected by lymphoma and immune system disease.

Lymphoma is a type of blood cancer that occurs when lymphocytes, white blood cells that help protect the body from infection and disease, begin behaving abnormally.

Lymphoma patient receiving chemotherapy treatment in a clinical hospital setting.

Lymphoma Journey

Each person’s experience with lymphoma is different, and how they cope with the physical and emotional impact of having this disease is unique to their situation.  Below, you’ll find information and tools patients and their loved ones may find helpful based on where they are in their lymphoma journey.

Oncologist speaking with a patient undergoing evaluation for potential lymphoma diagnosis.

Someone who is awaiting a diagnosis, recently diagnosed, or soon-to-be treated.

Doctor discussing treatment options with patient facing a recurrence of lymphoma.

Someone whose lymphoma has relapsed or is refractory after treatment.

A lymphoma survivor receiving emotional support from caregivers and loved ones during survivorship.

  800-500-9976  |    helpline@lymphoma.org

We team up with experts to host educational programs that provide clear, easy-to-use information to help you or your loved one navigate every step of your journey.

We offer a wide range of free disease and treatment-specific publications for people with lymphoma, their loved ones, and healthcare professionals.

Peer Support

We offer one-to-one peer support through the Lymphoma Support Network (LSN). LSN connects patients and care partners with volunteers who have had similar experiences for support.