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.
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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 ?
Prostate biopsies can cause side effects, and do not always identify the severity of a cancer when it is present.
In one case, the diagnosis could not be made despite two biopsies performed with one month interval.
(11) found that the vast majority (95.7%) of biopsies were guided by US, with only 157 of 3636 liver biopsies guided by CT.
We included in this study consecutive biopsies with both standard 12-core sextant and MRI-targeted biopsies with a cancer diagnosis in either standard or targeted biopsies or both performed at the same institution using the same MRI and biopsy protocols between April 2015 and August 2016.
Increasing risk of infectious complications after transrectal ultrasound-guided prostate biopsies: time to reassess antimicrobial prophylaxis?
International recommendations favour punch biopsy for most of the disorders, however, keeping in mind the limited resources, it can always be tailored to small incisional biopsies. Following are minimum necessary instruments including other supplies that we need to have in our outpatient room or theatre to suffice a skin biopsy.
After having obtained informed consents from the patients, all biopsies were carried out transrectally with ultrasonography guidance using a 25 cm 18-gauge, side-notch cutting (Tru-cut) needle.
Biopsies are performed primarily by body-trained radiologists, and infrequently, by interventional radiology.
Contemporary mpMRI fusion biopsy trials included a concurrent standard systemic biopsy and targeted biopsies. Although the place of mpMRI in the diagnostic pathway of prostate cancer is still being studied, some authors are suggesting that it should be done prior to any biopsy of the prostate (7).
"MRI is increasingly being used as a tool to direct where we do our biopsies, but also some people are using it to decide whether to do a biopsy or not," Dr.