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A biopsy is the removal of a small
piece of tissue for laboratory examination.
There are several different types of
biopsies.
A needle (percutaneous) biopsy
removes tissue using a hollow tube called a syringe. A needle is passed
thru the syringe into the area of concern. The tissue is taken out using
this needle. Needle biopsies are often performed using x-rays (usually
CT scan), which guide the surgeon to the appropriate area.
An open biopsy is a surgery that
uses general anesthesia. This means you are asleep and pain-free during
the procedure. The procedure is done in a hospital operating room. A
surgeon makes a cut into the affected area, and the tissue is removed.
Closed biopsy uses a much smaller
surgical cut than open biopsy. The small cut is made so that a
camera-like instrument can be inserted. This instrument can be used to
see the area, and helps guide the surgeon to the appropriate place to
take the sample.
(courtesy of www.nlm.nih.gov)
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