Soft-tissue Biopsy Technique
نویسنده
چکیده
The instrument described here consists of a special syringe on which sharp cutting needles of various sizes are mounted. These produce undistorted biopsy specimens. Suction is used only to retain the specimen within the needle, and the cleancut cylinder of tissue is quite unlike that obtained by aspiration. Gillman and Gillman&2 used this principle for their liver biopsy instrument. We have retained their bevel-sharpened needle for percutaneous liver and renal biopsy, modifying the construction and adding a series of trephine-sharpened needles of different sizes to obtain specimens from a wide range of soft tissues, including thyroid, prostate, lymph nodes, and tumour masses, etc. The technique employed for obtaining tissue with these trephine needles differs fundamentally from that for the bevel-sharpened needle.
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