biopsy

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Related to aspiration biopsy: aspiration cytology

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 ?
Fine-needle aspiration biopsy is an excellent diagnostic tool for prompt identification of Cryptococcus.
A fine needle aspiration biopsy was performed and reported as benign adenomatous cells.
has a joint venture with Aspiration Biopsy Laboratory in Cleveland; has recently opened a European laboratory in Amsterdam and created a joint venture with a large reference laboratory in Paris.
A fine-needle aspiration biopsy confirmed metastatic carcinoma.
WASHINGTON -- The results of fine-needle aspiration biopsy can be misleading in cases of medullary thyroid carcinoma.
Monosomy 3 can be determined using fluorescence in situ hybridization (FISH), either on enucleated samples, fine-needle aspiration biopsy, or tumor sample obtained by vitrector.
Fine-needle aspiration biopsy may be useful in identifying benign epithelial cells in a blue myxoid matrix background.
Fine-needle aspiration biopsy of the thyroid gland is safe, inexpensive, minimally invasive, and highly accurate in the diagnosis of thyroid nodules (1,2,6) Practice guidelines proposed by the American Thyroid Association and the National Comprehensive Cancer Network state that FNA should be used as the initial diagnostic test, before both thyroid scintigraphy and ultrasonography.
On aspiration biopsy of the liver, with remarks on its diagnostic significance.