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.

biopsy

[′bī‚äp·sē]
(pathology)
The removal and examination of tissues, cells, or fluids from the living body for the purposes of diagnosis.

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
References in periodicals archive ?
The large share of this segment can be attributed to the increased preference for needle biopsies over open surgical breast biopsies and the demand for scar-less and painless surgical procedures.
The evaluation set out to assess the clinical efficacy of ultrasound-guided liver and kidney biopsies using Smart Fusion.
Histological evaluation of the rectal biopsies revealed the presence of normal rectal mucosa and submucosa with mucosal lymphoid nodule identified at the two biopsy sites.
Investigators found that 53% of men whose prostate biopsies showed expression of ERG protein developed invasive prostate cancer, compared to 35% of men whose biopsies were ERG-negative.
Therefore, in this study we sought to describe in detail the use of IHC in routine evaluation of prostate needle biopsy practice in a tertiary academic institution and to examine the quality assurance implications of the use of IHC for HMWK and AMACR, such as the biopsy turnaround times when IHC was used, the final diagnosis rendered on specific cores, and the intradepartmental consultation performed in this setting, as well as the cost analysis of IHC for routine evaluation of prostate needle biopsies in our institution.
Histologic discordance was found in 7% of MR-guided biopsies of 342 lesions by Lee et al.
All patients in the study had undergone shave biopsies of lesions less than 2 mm in depth.
In addition, advantages/disadvantages of transitional zone and seminal vesicle biopsies, and complications related with the procedure itself are discussed.
1A 1998 study found that among approximately 68,000 needle biopsies, there were eight metastases along the needle track, a rare risk that was deemed "random and unavoidable.
Some veterans who received prostate biopsies between 1997 and 2001 at Department of Veterans Affairs medical facilities in 11 states, the District of Columbia and Puerto Rico may have been treated with improperly disinfected instruments, according to VA officials.
I would suspect it would show needle biopsies are hugely cheaper," added Dr.