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 ?
Multiple biopsies and detection of cervical cancer precursors at colposcopy [published online ahead of print November 24, 2014].
The study evaluated a total of 35 patients undergoing ultrasound-guided biopsies using Smart Fusion between February 2013 and May 2014, including 33 liver lesion biopsies, one renal core biopsy and one renal lesion biopsy.
The percentage of abnormal rectal suction biopsies was significantly higher in the neonates (29%) compared to infants (15%) or toddlers above the age of 1 year (5%).
The findings mean that potentially thousands of men a year--those with ERG-positive HG PIN biopsies--may benefitfrom increased surveillance and early treatment, while those whose HG PIN biopsies come back ERG-negative may be able to avoid unnecessary future biopsies.
Acute inflammation in biopsies taken at the start of the study was most common in men of younger ages who had lower PSA levels and smaller prostates, while chronic inflammation was associated with older age and larger glands.
The risk of LPM among those with persistent villous atrophy on the follow-up biopsy was more than twofold greater than that among those with biopsies that showed mucosal healing (hazard ratio, 2.
Owing to the safety profile of the procedure, the international ongoing need for cost containment and the inherent safety of the procedure, renal biopsies are performed as outpatient procedures, with the patient being discharged after 6-8 hours of observation.
It's interesting to note that dermatologists performed about 90% of the shave biopsies on patients who were referred, and that on clinical exam, more than two-thirds did not have a diagnosis of melanoma.
In addition, advantages/disadvantages of transitional zone and seminal vesicle biopsies, and complications related with the procedure itself are discussed.