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Biopsy
A biopsy is a medical test commonly performed by a surgeon, interventional radiologist, or an interventional cardiologist involving sampling of cells or tissues for examination. It is the medical removal of tissue from a living subject to determine the presence or extent of a disease. The tissue is generally examined under a microscope by a pathologist, and can also be analyzed chemically. When an entire lump or suspicious area is removed, the procedure is called an ''excisional biopsy''. When only a sample of tissue is removed with preservation of the histological architecture of the tissue’s cells, the procedure is called an ''incisional biopsy'' or ''core biopsy''. When a sample of tissue or fluid is removed with a needle in such a way that cells are removed without preserving the histological architecture of the tissue cells, the procedure is called a needle aspiration biopsy. Biopsies are most commonly performed for insight into possible cancerous and inflammatory conditions.
==Etymology==
Biopsy is of Greek origin, coming from the words βίος ''bios'', "life," and ὄψις ''opsis'', "a sight."〔("biopsy" ). ''Online Etymology Dictionary''.〕
French dermatologist Ernest Besnier introduced the word ''biopsie'' to the medical community in 1879.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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