bi·op·sy (biŽop-se) [ bio-+ Gr. opsis vision ] |
the removal and examination, usually microscopic, of tissue from the
living body, performed to establish precise diagnosis. |
aspiration biopsy, biopsy in which the tissue is
obtained by the application of suction through a needle attached to a
syringe. |
bite biopsy, the instrumental removal of a fragment
of tissue. |
blastomere
biopsy, a technique for preimplantation genetic diagnosis, in which a
blastomere is removed from a 6- or 8-cell embryo and tested for genetic
abnormalities. |
brush biopsy, biopsy in which the sample is obtained
by manipulating tiny brushes against it, such as through a bronchoscope. |
chorionic villus
biopsy, see under sampling. |
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; used in diagnosis of prostate and kidney conditions. |
cytologic biopsy,
removal of cells for pathological examination; any of various methods
can be used, such as brush biopsy or irrigation of hollow viscera. |
endomyocardial biopsy, sampling of the
endomyocardial tissue with a bioptome inserted percutaneously and
advanced via the femoral or internal jugular vein to the right heart or
via the femoral artery to the left heart; used to assess cardiac
transplant rejection or anthracycline-induced cardiotoxicity, and
sometimes in diagnosing myocarditis, cardiomyopathy, or infiltrative
diseases. |
endoscopic
biopsy, removal of tissue by appropriate instruments introduced through
an endoscope. |
excisional
biopsy, biopsy of tissue removed by excision; biopsy of an entire
lesion, including a significant margin of contiguous normal-appearing
tissue. Cf. lumpectomy. |
exploratory biopsy, exploration combined with biopsy
to determine the type and extent of neoplasms, both deep and
superficial. |
fine-needle aspiration biopsy, aspiration biopsy
using a fine needle; for superficial tissue such as the thyroid, breast,
or prostate the needle is unguided but for deep tissue it must be guided
radiologically. |
incisional biopsy, biopsy of a selected portion of a
lesion and, if possible, of adjacent normal-appearing tissue. |
laparoscopic
biopsy, biopsy of the abdominal organs using instruments introduced
through a laparoscope for the removal of tissue. |
needle biopsy,
biopsy in which tissue from deep within the body is obtained by
insertion through the skin of a specifically designed needle that
detaches tissue with an inner needle so that the tissue can be brought
to the surface in the needle's lumen. Called also percutaneous b. |
optical biopsy, any technique that uses the
interaction of light and tissue to provide information about the tissue. |
percutaneous
biopsy, needle b. |
punch biopsy,
biopsy in which tissue is obtained by a specifically designed round
knife biopsy punch. |
sentinel node biopsy, biopsy of a sentinel node to
assess for malignancy; if it does not contain malignant cells, this
usually eliminates the need for removal of more distal nodes. Called
also intraoperative lymphatic mapping. |
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 a
stereotactic technique to locate the biopsy site. |
sternal biopsy, biopsy of bone marrow of the
sternum; done by puncture or trephination. |
surface biopsy, biopsy of cells scraped from the
surface of suspicious or obvious lesions, usually done in examination
for cancer of the cervix. |
transbronchial lung biopsy, biopsy of the lung
through a bronchofiberscope (or rigid bronchoscope in small children)
positioned under fluoroscopic guidance. |
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