biopsy /bi·op·sy/ (bi´op-se) removal and examination, usually microscopic, of tissue from the living body, performed to establish precise diagnosis.
needle biopsy,
biopsy (bī´opsē),
needle,
needle biopsy
aspiration biopsy biopsy in which tissue is obtained by application of suction through a needle attached to a syringe.
brush biopsy biopsy in which cells or tissue are obtained by manipulating tiny brushes against the tissue or lesion in question (e.g., through a bronchoscope) at the desired site.
cone biopsy biopsy in which an inverted cone of tissue is excised, as from the uterine cervix.
core biopsy , core needle biopsy needle biopsy with a large hollow needle that extracts a core of tissue.
endoscopic biopsy removal of tissue by appropriate instruments through an endoscope.
excisional biopsy biopsy of tissue removed by surgical cutting.
incisional biopsy biopsy of a selected portion of a lesion.
needle biopsy biopsy in which tissue is obtained by puncture of a tumor, the tissue within the lumen of the needle being detached by rotation, and the needle withdrawn. Called also percutaneous b.
percutaneous biopsy needle b.
punch biopsy biopsy in which tissue is obtained by a punch.
shave biopsy biopsy of a skin lesion in which the sample is excised using a cut parallel to the surface of the surrounding skin.
stereotactic biopsy biopsy of the brain using stereotactic surgery to locate the biopsy site.
sternal biopsy biopsy of bone marrow of the sternum removed by puncture or trephining.
| needle biopsy n. Removal of a specimen for biopsy by aspirating it through a needle or trocar that pierces the skin or the external surface of an organ and continues into the underlying tissue to be examined. Also called aspiration biopsy. |
needle biopsy,
the removal of a segment of living tissue for microscopic examination by inserting a hollow needle through the skin or the external surface of an organ or tumor and rotating it within the underlying cellular layers. Also called fine-needle aspiration. See also aspiration biopsy.
biopsy (bī´opsē),
n the removal of a tissue specimen or other material from the living body for microscopic examination to aid in establishing a diagnosis.
biopsy, aspiration,
biopsy, excisional
n the removal of an entire lesion, usually including a significant margin of contiguous normal tissue, for microscopic examination and diagnosis.
biopsy, exploratory,
n an exploration combined with biopsy to determine method and degree of local extension, usually of bone or deep soft-tissue lesions.
biopsy, incisional
n the surgical removal of a selected mass of a lesion and adjacent normal tissue for microscopic examination and diagnosis.
biopsy, needle,
biopsy, oral brush,
n brand name: OralCDx; a noninvasive procedure used to detect early oral cancer during which a sterile brush is rotated against the suspected lesion to obtain a tissue sample.
biopsy, punch,
n biopsy material obtained by use of a punch.
biopsy, shave,
n a biopsy of skin or mucosal tissue made by removing part or all of a lesion with a scalpel held parallel to the base of the lesion.
needle,
n a sharp, metal shaft that is available in a variety of forms for penetrating tissue (e.g., in carrying sutures or injecting solutions).
needle, bevel,
n the slanted part of a needle, which creates a sharp, pointed tip. The bevel of the needle allows for easy penetration of the oral mucosa in dentistry.
needle biopsy,
n the removal of a segment of living tissue for microscopic examination by inserting a hollow needle through the skin or the external surface of an organ or tumor and rotating it within the underlying cellular layers to retrieve a tissue specimen for examination.
needle, gauge of,
n the outside diameter of a needle.
needle, Gillmore,
n.pr an instrument used in a penetration type of test for measuring the setting time of materials such as plaster or stone. A ¼-pound needle is used for determining the initial set, and a 1-pound needle is used for defining the final set.
needle holder,
n a forceps used to hold and pass the needle through the tissue while suturing with a suture forceps.
needle, hub/syringe adaptor,
n the proximal end of a needle, which attaches to the syringe barrel by means of a press-fit mechanism (Luer) or a twist-on mechanism (Luer-lock).
needle, lumen
n the interior diameter of a needle. The lumen, or bore, measurement is variable depending on the thickness of the catheter material. In general, the higher the needle gauge, the smaller the diameter of the lumen.
needle point tracer,
needle, shank,
n the length of a needle as measured from the hub (proximal end) to the bevel (distal end). In the United States, needle shanks are measured in inches and fractions of inches.
needle stick injuries,
n accidental skin punctures resulting from contact with hypodermic syringe needles. Such injuries can be dangerous, particularly if the needle has been used in treatment of a patient with a severe blood-borne infection, such as hepatitis or AIDS. A strict federal protocol for the use and disposal of needles is required for all health care facilities and personnel engaged in direct patient care. The ADA has a policy for dental offices and clinics.
needle, suture,
n a small, sterile, stainless steel implement used during and after surgery to sew stitches into various types of human tissue.
needle, swaged end of
n the opposite end of the sharp tip of a sterile, stainless steel implement, where the thread had been attached directly to it, so that threading is not necessary.
needle, tapered suture,
n the pointed tip of a surgical mending tool.
needle, Vicat,
n.pr an instrument used for measuring setting time by means of a penetration test.
biopsy
removal and examination, usually microscopic, of tissue from the living body. Biopsies are usually done to determine whether a tumor is malignant or benign; however, a biopsy may be a useful diagnostic aid in other disease processes such as infections.
aspiration biopsy
biopsy in which tissue is obtained by application of suction through a needle attached to a syringe.
bite biopsy
instrumental removal of a fragment of tissue.
bone marrow biopsy
obtaining a sample of bone marrow, usually by needle aspiration, from a long bone, rib or sternum, for cytological examination.
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Needle aspiration of bone marrow. By permission from Ettinger SJ, Feldman E, Textbook of Veterinary Internal Medicine, Saunders, 2004
brush biopsy
removal of cells and tissue fragments using a brush with stiff bristles (introduced through an endoscope). Effective in obtaining tissue samples from inaccessible places such as the renal pelvis.
closed biopsy
one carried out without access through an open incision such as a laparotomy. An example is a percutaneous, fine needle aspirate.
cone biopsy
biopsy in which an inverted cone of tissue is excised, as from the uterine cervix.
cytological biopsy
obtaining specimens of cells by various methods including irrigation of a hollow tube.
biopsy dart
an alternative to immobilization of large and wild animals; a dart which cuts a skin bipsy, then falls out. Limited to use for superficial lesions.
endoscopic biopsy
removal of tissue by appropriate instruments through an endoscope.
excisional biopsy
biopsy of tissue removed from the body by surgical cutting.
exploratory biopsy
a combination of exploratory surgery to determine size and location of a lesion and the taking of a biopsy.
fine needle biopsy
see needle biopsy (below).
hepatic biopsy
may be by transperitoneal incision, more commonly by percutaneous needle or trocar and cannula technique.
incisional biopsy
biopsy of a selected portion of a lesion.
needle biopsy
biopsy in which tissue is obtained by puncture of a tumor, the tissue within the lumen of the needle being detached by rotation, and the needle withdrawn.
punch biopsy
see punch biopsy.
Robson-Heggers biopsy
a procedure for the collection of a piece of tissue from an infected wound in order to determine the extent and the nature of the infection.
sternal biopsy
biopsy of bone marrow of the sternum removed by puncture or trephining (see also sternal puncture).
surface biopsy
sample of cells scraped from the surface of a lesion or obtained by impression smears.
surgical biopsy
one obtained during a surgical procedure.
synovial biopsy
by a needle biopsy technique or through an arthrotomy incision using special forceps for a bite biopsy.
total biopsy
obtained by removal of the entire lesion. May be for therapeutic as well as diagnostic purposes.
ultrasound-guided biopsy
use of ultrasonography to guide the passage of a needle or biopsy instrument into an internal organ or lesion.
needle biopsy
Fine-needle aspiration A diagnostic preparation similar to aspiration cytology, but uses a larger bore–eg, 19-gauge, needle to obtain architecturally intact tissue, yielding a higher diagnostic success rate than with
cytology alone. Cf Needle aspiration cytology.
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