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Core Biopsy Technique

Chapter 12: Table of Contents

Core Biopsy Technique

To obtain a core biopsy sample, a 14, 16 or 18 gauge Tru-cut biopsy needle is used. The needle is placed against the renal capsule at the caudal pole of the kidney. The instrument is positioned to obtain mostly a cortical sample; do not aim the needle towards the renal pelvis or renal vessels. The instrument is activated and once retracted, the surgeon or assistant places a finger on the puncture site for several minutes to control hemorrhage until clotting occurs. A suture is rarely required in patients with normal clotting function. The biopsy core can then be removed from the instrument and placed in formalin for histopathology.

Kidney: Tru-cut Biopsy Technique

< Wedge Biopsy Technique Video: Kidney Biopsy >