General Information About AIDS-Related Lymphoma
- AIDS-related lymphoma is a disease in which malignant (cancer) cells form in the lymph system of patients who have acquired immunodeficiency syndrome (AIDS).
- There are many different types of lymphoma.
- Signs of AIDS-related lymphoma include weight loss, fever, and night sweats.
- Tests that examine the lymph system and other parts of the body are used to help detect (find) and diagnose AIDS-related lymphoma.
- Certain factors affect prognosis (chance of recovery) and treatment options.
AIDS-related lymphoma is a disease in which malignant (cancer) cells form in the lymph system of patients who have acquired immunodeficiency syndrome (AIDS).
AIDS is caused by the human immunodeficiency virus (HIV), which attacks and weakens the body’s immune system. The immune system is then unable to fight infection and disease. People with HIV disease have an increased risk of infection and lymphoma or other types of cancer. A person with HIV disease who develops certain types of infections or cancer is then diagnosed with AIDS. Sometimes, people are diagnosed with AIDS and AIDS-relatedlymphoma at the same time. For information about AIDS and its treatment, please see the AIDSinfo website.
AIDS-related lymphoma is a type of cancer that affects the lymph system, which is part of the body’s immune system. The immune system protects the body from foreignsubstances, infection, and diseases. The lymph system is made up of the following:
- Lymph: Colorless, watery fluid that carries white blood cells called lymphocytesthrough the lymph system. Lymphocytes protect the body against infections and the growth of tumors.
- Lymph vessels: A network of thin tubes that collect lymph from different parts of the body and return it to the bloodstream.
- Lymph nodes: Small, bean-shaped structures that filter lymph and store white blood cells that help fight infection and disease. Lymph nodes are located along the network of lymph vessels found throughout the body. Clusters of lymph nodes are found in the neck, underarm, abdomen, pelvis, and groin.
- Spleen: An organ that makes lymphocytes, filters the blood, stores blood cells, and destroys old blood cells. The spleen is on the left side of the abdomen near the stomach.
- Thymus: An organ in which lymphocytes grow and multiply. The thymus is in the chest behind the breastbone.
- Tonsils: Two small masses of lymph tissue at the back of the throat. The tonsils make lymphocytes.
- Bone marrow: The soft, spongy tissue in the center of large bones. Bone marrow makes white blood cells, red blood cells, and platelets.
Lymph tissue is also found in other parts of the body such as the brain, stomach, thyroid gland, and skin.
Sometimes AIDS-related lymphoma occurs outside the lymph nodes in the bone marrow, liver, meninges (thin membranes that cover the brain) and gastrointestinal tract. Less often, it may occur in the anus, heart, bile duct, gingiva, and muscles.
There are many different types of lymphoma.
Lymphomas are divided into two general types:
- Hodgkin lymphoma.
- Non-Hodgkin lymphoma.
Both Hodgkin lymphoma and non-Hodgkin lymphoma may occur in patients with AIDS, but non-Hodgkin lymphoma is more common. When a person with AIDS has non-Hodgkin lymphoma, it is called AIDS-related lymphoma. When AIDS-related lymphoma occurs in the central nervous system (CNS), it is called AIDS-related primary CNS lymphoma.
Non-Hodgkin lymphomas are grouped by the way their cells look under a microscope. They may be indolent (slow-growing) or aggressive (fast-growing). AIDS-related lymphomas are aggressive. There are two main types of AIDS-related non-Hodgkin lymphoma:
- Diffuse large B-cell lymphoma (including B-cell immunoblastic lymphoma).
- Burkitt or Burkitt-like lymphoma.
Signs of AIDS-related lymphoma include weight loss, fever, and night sweats.
These and other signs and symptoms may be caused by AIDS-related lymphoma or by other conditions. Check with your doctor if you have any of the following:
- Weight loss or fever for no known reason.
- Night sweats.
- Painless, swollen lymph nodes in the neck, chest, underarm, or groin.
- A feeling of fullness below the ribs.
Tests that examine the lymph system and other parts of the body are used to help detect (find) and diagnose AIDS-related lymphoma.
The following tests and procedures may be used:
- Physical exam and history : An exam of the body to check general signs of health, including checking for signs of disease, such as lumps or anything else that seems unusual. A history of the patient’s health habits and past illnesses and treatments will also be taken.
- Complete blood count (CBC): A procedure in which a sample of blood is drawn and checked for the following:
- HIV test : A test to measure the level of HIV antibodies in a sample of blood. Antibodies are made by the body when it is invaded by a foreign substance. A high level of HIV antibodies may mean the body has been infected with HIV.
- Lymph node biopsy : The removal of all or part of a lymph node. A pathologist views the tissue under a microscope to look for cancer cells. One of the following types of biopsies may be done:
- Bone marrow aspiration and biopsy : The removal of bone marrow and a small piece of bone by inserting a hollow needle into the hipbone or breastbone. A pathologist views the bone marrow and bone under a microscope to look for signs of cancer.
- Chest x-ray : An x-ray of the organs and bones inside the chest. An x-ray is a type of energy beam that can go through the body and onto film, making a picture of areas inside the body.
Certain factors affect prognosis (chance of recovery) and treatment options.
- The stage of the cancer.
- The age of the patient.
- The number of CD4 lymphocytes (a type of white blood cell) in the blood.
- The number of places in the body lymphoma is found outside the lymph system.
- Whether the patient has a history of intravenous (IV) drug use.
- The patient’s ability to carry out regular daily activities.