biopsy

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Related to fine needle biopsy: core needle biopsy

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 ?
Caption: Figure 4: (a) Hematoxylin and eosin staining of a specimen obtained from pancreatic mass with EUS-guided fine needle biopsy. (b) Biopsy fragments show invasive carcinoma morphologically similar to the carcinoma identified in the supraclavicular lymph node and the mediastinal mass.
Needle catheter for transbronchial aspiration, device for endoscopic fine needle biopsy under ultrasound guidance, with a needle, stent with delivery system, stent with delivery system, stent of the esophagus
Wetzler, "Ultrasound-guided fine needle biopsy of the spleen: high clinical efficacy and low risk in a multicenter Italian study," American Journal of Hematology, vol.
(6) Lymph node excision or fine needle biopsy as a therapeutic and diagnostic measure to determine the etiology of the underlying illness has long been a practice.
Cutaneous metastases can be diagnosed on excisional biopsy or by fine needle biopsy.[sup.23] Treatment is usually excision and can be curative if it is solitary or palliative in disseminated metastatic disease.