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The Adult Blood and Marrow Transplantation Program


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Glossary - E


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Edema: Swelling; an abnormal accumulation of fluid most often seen in the extremities or the face.

Effusion: Collection of fluid in tissue or in a body cavity, such as in the chest (pleural effusion).

Endoscopy: An examination that uses fiber optics or a hollow tube with a light that visualizes the inside of a body cavity.

Engraftment: Return of the normal production and maturing of blood cells, following stem cell transplantation. Engraftment is characterized by an increase in white blood cells and/or platelets in the peripheral blood and the presence of donor cells in the bone marrow.

Epidural: Located over or upon the dura mater, the outermost and toughest membrane covering the spinal cord and brain.

Epidural Anesthesia: A medication given into the outer (epidural) layer of the spinal cord to block any painful sensations from the point of insertion to the lower part of your body. Epidural anesthesia causes a loss of feeling in the lower part of your body. The donor may be awake with this form of anesthesia. About 20 percent of volunteer marrow donors choose this form of anesthesia.

Erythema: Redness of the skin or other body surfaces.

Erythrocytes: Blood cells that carry oxygen to all parts of the body. Also called red blood cells (RBCs).

Erythropoietin: A substance or "growth factor" produced by the kidneys that stimulates the production of red blood cells. This substance is produced by recombinant DNA technology and can be administered to a patient weekly to enhance red cell production.

Esophagitis: Inflammation of the esophagus or swallowing tube.

Esophagoscopy: Examination of the esophagus with a thin, lighted scope.

Esophagus: A muscular tube which runs from the back of the throat to the stomach. Food travels through the tube by coordinated muscular contractions to get to the stomach.

Etiology: The causes of disease.