Cancer & Tumors terms

An abnormal mass of tissue that results when cells divide more than they should or do not die when they should.

Cancer that arises in immature nerve cells and affects mostly infants and children.

A tumor of the central or peripheral nervous system.

A rare type of cancer that forms on or just beneath the skin, usually in parts of the body that have been exposed to the sun.

A tumor that forms from cells that release hormones in response to a signal from the nervous system.

A genetic condition that causes unusual facial features and disorders of the skin, bones, nervous system, eyes, and endocrine glands.

A type of leukemia in which large natural killer (NK) cells (a type of white blood cell) that contain granules (small particles) are found in the blood.

Cancer that has not spread to the lymph nodes.

Cancer that has spread to the lymph nodes.

A rare type of Hodgkin lymphoma, which is a cancer of the immune system.

Any of a large group of cancers of lymphocytes (white blood cells).

A group of lung cancers that are named for the kinds of cells found in the cancer and how the cells look under a microscope.

Lymphoma in which the lymph nodes containing cancer are not next to each other, but are on the same side of the diaphragm (the thin muscle below the lungs that helps breathing and separates the…

A tumor that is found in endocrine tissue but does not make extra hormones.

Cancer that does not begin in the blood or bone marrow.

Abnormal cells are found in the lower part of the epidermis (the outer layer of the skin).

Skin cancer that forms in the lower part of the epidermis (the outer layer of the skin) or in squamous cells, but not in melanocytes (skin cells that make pigment).

Cancer that has not spread from the primary site (place where it started) to other places in the body.

Cancer in which the site of the primary (original) tumor cannot be found.

Cancer cells are found in sputum (mucus coughed up from the lungs), but no tumor can be found in the lung by imaging tests or bronchoscopy, or the tumor is too small to be checked.