Medical terms A–Z

A procedure in which cells are scraped from the lining of the anus (the opening of the rectum to the outside of the body) and looked at under a microscope.

A procedure in which cells are scraped from the lining of the anus (the opening of the rectum to the outside of the body) and looked at under a microscope.

Analgesia is the reduction or absence of pain sensation without necessarily causing loss of consciousness.

A medicine or intervention that reduces pain.

In chemistry, a substance that is similar, but not identical, to another.

A process in which anything complex is separated into simple or less complex parts.

A severe and sometimes life-threatening immune system reaction to an antigen that a person has been previously exposed to.

A term used to describe cancer cells that divide rapidly and have little or no resemblance to normal cells.

An aggressive (fast-growing) type of non-Hodgkin lymphoma that is usually of the T-cell type.

A rare, aggressive type of thyroid cancer in which the malignant (cancer) cells look very different from normal thyroid cells.

A procedure to connect healthy sections of tubular structures in the body after the diseased portion has been surgically removed.

Having to do with anatomy (the study of the structure of a plant or animal).

A person who specializes in anatomy (the study of the structures of animals or plants).

The study of the structure of a plant or animal.

In a clinical trial, a medical test on a patient that is not a part of the original study design.

A rare type of ovarian tumor in which the tumor cells secrete a male sex hormone.

A type of hormone that promotes the development and maintenance of male sex characteristics.

Treatment to suppress or block the production or action of male hormones.

Treatment to suppress or block the production or action of male hormones.

Describes cells that have a protein that binds to androgens (male hormones).