NCIt definition : The removal of tissue specimens or fluid from the living body for microscopic examination,
performed to establish a diagnosis.;
Alternative definition : NCI-GLOSS: The removal of cells or tissues for examination by a pathologist. The pathologist
may study the tissue under a microscope or perform other tests on the cells or tissue.
There are many different types of biopsy procedures. The most common types include:
(1) incisional biopsy, in which only a sample of tissue is removed; (2) excisional
biopsy, in which an entire lump or suspicious area is removed; and (3) needle biopsy,
in which a sample of tissue or fluid is removed with a needle.; FDA: Patient required removal of tissue or fluid specimen to establish a diagnosis.;