Renal Needle Biopsy along the Retrograde Puncture Line of the Renal Calyx: A New Promising Technique

Abstract

The Biopty-gun is a useful tool in conducting percutaneous renal biopsies, but bleeding is still a significant complication. To reduce the rate of severe bleeding complications, we attempted a new method of renal needle biopsy using a retrograde access technique. Retrograde puncture of the renal calyx was performed using the Lawson nephrostomy kit. The 18-gauge needle of the Biopty-gun was inserted along the puncture wire and fired. A 7-french pigtail catheter was retained in the renal pelvis for a few days following the procedure. This biopsy is a promising and safe technique.

Biopsy of the Transplanted Kidney

“…An alternative technique of renal biopsy was used by Mimata et al 31 In a pilot study, the authors performed renal calyx puncture in a retrograde fashion, passing the wire transcutaneously using ureteroscopic guidance and then inserted a guiding needle over the wire. Through this guiding needle, a core biopsy device was inserted and biopsy performed.…”

Ureteroscopy assisted retrograde nephrostomy: a new technique for percutaneous nephrolithotomy (PCNL)

“…[2] reported six complications in 30 patients including two pneumothorax, two haemorrhage, and two cases of severe narcosis. Regarding haemorrhage, this also occurs after percutaneous nephrostomy [16]. The retrograde nephrostomy puncture usually requires a single movement, and as the needle passes from a posteriorly located calyx through the retroperitoneum, the possibility of damage to intra‐/extrarenal vessels is less likely [3].…”