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 ?
Digital breast tomosynthesis-guided vacuum-assisted breast biopsy: initial experiences and comparison with prone stereotactic vacuum-assisted biopsy. Radiology.
Short-term findings of air and hematoma occur immediately after vacuum-assisted biopsy, but resolve rapidly.
Performing a breast biopsy with a directional, vacuum-assisted biopsy instrument.
Stereotactic breast biopsy of atypical ductal hyperplasia and ductal carcinoma in situ lesions: improved accuracy with directional, vacuum-assisted biopsy. Radiology.
Atypical ductal hyperplasia: histologic underestimation of carcinoma in tissue harvested from impalpable breast lesions using 11-gauge stereotactically guided directional vacuum-assisted biopsy. AJR Am J Roentgenol.
Comparison of automated versus vacuum-assisted biopsy methods for sonographically guided core biopsy of the breast.
The techniques for MR-guided, vacuum-assisted biopsy and the required imaging protocols have been reviewed.
* Mammotome EX vacuum-assisted biopsy system using the handheld 11 g probe, Ethicon Endo-Surgery Inc., Cincinnati, OH
The ATEC line of vacuum-assisted biopsy devices includes the ATEC Emerald, an MRI-compatible system that allows the clinician to perform a 30-minute MRI-guided breast biopsy with a single gadolinium injection, and the ATEC Sapphire breast biopsy system, which is designed to allow users to perform a biopsy using any of the 3 diagnostic imaging modalities--stereotactic X-ray, ultrasound, and MRI--on a single biopsy unit.