Medical Glossary
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Echocardiogram (Echo) This test uses sound waves to make a picture of the heart. A jelly-like substance is spread on the chest. A pen-like object is moved across the chest to make the picture. It is a painless test.
Edema The accumulation of fluid in part of the body such as swollen ankles.
Effusion An abnormal collection of fluid inside a body part, such as the lungs.
EGFR (Epidermal Growth Factor Receptor) Epidermal growth factor is a protein in the body that stimulates some cells, including some cancer cells, to grow and multiply. Some cancers are tested to see if the levels are abnormal.
EGFR Inhibitors Are a class of anti-cancer drugs. They work by blocking epidermal growth factors from stimulating cells to grow.
Electrocardiogram (ECG) An ECG will make a picture of the electrical currents of the heart. Large rubber bands are put around your arms and legs and small suction cups are put on the chest. This painless test will take approximately 10 minutes to complete.
Emesis Vomit or vomiting.
Endocrine Therapy A treatment with hormones.
Endoscopy A procedure usually done under sedation where a doctor passes a very small, flexible, lighted scope into a part of the body. This procedure allows the doctor to look directly at the tissues and to take a biopsy if necessary.
Engraftment This is a stem cell transplant term to describe the process in which the transplanted bone marrow or the peripheral blood stem cells begin to grow and to manufacture new white blood cells, red blood cells and platelets.
ER (Estrogen Receptor) A test performed on breast cancer tissue to determine the level of estrogen present to see if it was a factor in the development of the breast cancer and also to see if the breast cancer would be responsive to hormone therapy.
Erythema Redness of the skin.
Erythrocyte Another name for a red blood cell, the blood cell that carries oxygen to the body’s tissues.
Esophagitis An inflammation of the esophagus.
Estrogen A female sex hormone produced in the ovaries and in smaller amounts in other areas of the body. Estrogen plays a role in the development of breast cancer in some women. Breast cancer cells are tested for the level of estrogen.
Estrogen A female hormone produced by the ovaries.
Estrogen Replacement Therapy Estrogen given to ease symptoms of menopause.
Excision Surgical removal of a questionable area.
Extravasation Leakage of fluid, usually referring to IV fluid or medications such as chemotherapy leaking into the surrounding tissue.