Comparison of three methods to obtain percutaneous needle core biopsies of a renal allograft

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Abstract
During 280 renal transplant biopsy procedures, 440 biopsy cores were obtained using three techniques: blind vertical pass, ultrasonographic guidance and ultrasonographic guidance with immediate specimen examination by stereoscopic microscopy. The success rates per procedure in obtaining renal cortex by blind vertical pass, ultrasonographic guidance and ultrasonographic guidance with microscopy were 75, 91 and 100 per cent respectively. Ultrasonographic guidance improves the success rate of percutaneous renal allograft biopsy. The additional use of immediate examination by stereoscopic microscopy yields a 100 per cent success rate for individual biopsy procedures.