biopsy

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biopsy

(bīäp`sē), examination of cells or tissues removed from a living organism. Excised material may be studied in order to diagnose disease or to confirm findings of normality. Preparatory techniques depend on the nature of the tissue and the kind of study intended. Incisions may be made and total or partial lesions removed in the form of wedges or cylindrical pieces, or scrapings of the surface membranes of internal organs may be collected. Needlelike instruments may be used to pierce the tissues and remove soft inner material. Once the tissue specimen has been obtained it is fixed, i.e., membrane proteins and enzymes are stabilized and chemical and histologic analyses are carried out by pathologists. Tumors are routinely biopsied in order to determine whether they are malignant. Fine needle aspiration is a technique more readily used for certain tumors or lesions because it is less expensive and damaging than traditional surgical biopsy.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

biopsy

[′bī‚äp·sē]
(pathology)
The removal and examination of tissues, cells, or fluids from the living body for the purposes of diagnosis.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

biopsy

1. examination, esp under a microscope, of tissue from a living body to determine the cause or extent of a disease
2. the sample taken for such an examination
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
In this study, we determined the accuracy of the outpatient percutaneous biopsy through comparison with the pathology report from the final surgical excision.
CT-guided percutaneous biopsy was successfully conducted in all 10 patients.
Some authors suggested that the performance of percutaneous biopsy in abdominal tumors may be improved using larger needles (especially for lymphoma subtyping) [16], more passes [8, 16, 17], and avoiding necrotic areas [8].
Percutaneous Biopsy of Osteoid Osteomas Prior to Percutaneous Treatment Using Two Different Biopsy Needles.
The part on non-vascular intervention includes sections on percutaneous biopsy, gastrointestinal and bilious tract interventions and cutting-edge topics such as energy-based ablation and advances in percutaneous pain management.
For this purpose, the patient was positioned left-lateral, that is, on the contra-lateral side, and a percutaneous biopsy under CT guidance was performed using a core needle biopsy system with a 17/18-gauge sized coaxial needle (Bard Magnum Biopsy System, Bard TruGuide Disposable Coaxial Needle; C.
Percutaneous biopsy of adrenal and extra-adrenal retroperitoneal lesions: Beware of catecholamine secreting tumours!
Although UESL can be successfully diagnosed using fine-needle aspiration and percutaneous biopsy, [15] there is a theoretically higher risk of peritoneal and tract seeding.
For this reason, open biopsy is usually indicated when, after a percutaneous biopsy, the diagnosis is inconclusive or does not correlate with the clinical presentation and radiologic findings [2].
He underwent an ERCP and insertion of a CBD stent to relieve his jaundice and an attempted percutaneous biopsy of his pancreatic mass yielded inadequate cells.
The stem cells were harvested from each patient via percutaneous biopsy of the right ventricular myocardium, and were cultured to yield the large quantities necessary for treatment.

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