E

expectant management

Closely watching a patient … [Read more...]

experimental

In clinical trials, refers to a drug (including a new drug, dose, combination, or route of administration) or procedure that has undergone basic laboratory … [Read more...]

experimental drug

A substance that has been tested in a laboratory and has gotten approval from the U.S. Food and Drug Administration (FDA) to be tested in people. An … [Read more...]

exploratory surgery

Surgery to look inside the body to help make a diagnosis. … [Read more...]

extensive-stage small cell lung cancer

Cancer has spread outside of the lung in which it began or to other parts of the body. … [Read more...]

extent of disease

Refers to the stage of the disease and details the degree to which the cancer has advanced. Extent of disease records the number of lymph nodes involved, … [Read more...]

external radiation therapy

A type of radiation therapy that uses a machine to aim high-energy rays at the cancer from outside of the body. Also called external-beam radiation therapy. … [Read more...]

external-beam radiation therapy

A type of radiation therapy that uses a machine to aim high-energy rays at the cancer from outside of the body. Also called external radiation therapy. … [Read more...]

extracorporeal photopheresis

A procedure in which blood is removed from the body and treated with ultraviolet light and drugs that become active when exposed to light. The blood is then … [Read more...]

extracranial

Outside of the cranium (bones that surround the brain). … [Read more...]