Korean J Urol.  2010 May;51(5):298-307.

Percutaneous Nephroscopic Surgery

• Hwang TK

Abstract

With the development of techniques for percutaneous access and equipment to disintegrate calculi, percutaneous nephroscopic surgery is currently used by many urologists and is the procedure of choice for the removal of large renal calculi and the management of diverticula, intrarenal strictures, and urothelial cancer. Although it is more invasive than shock wave lithotripsy and retrograde ureteroscopic surgery, percutaneous nephroscopic surgery has been successfully performed with high efficiency and low morbidity in difficult renal anatomies and patient conditions. These advantages of minimal invasiveness were rapidly perceived and applied to the management of ureteropelvic junction obstruction, calyceal diverticulum, infundibular stenosis, and urothelial cancer. The basic principle of endopyelotomy is a full-thickness incision of the narrow segment followed by prolonged stenting and drainage to allow regeneration of an adequate caliber ureter. The preferred technique for a calyceal diverticulum continues to be debated. Excellent long-term success has been reported with percutaneous, ureteroscopic, and laparoscopic techniques. Each approach is based on the location and size of the diverticulum. So far, percutaneous ablation of the calyceal diverticulum is the most established minimally invasive technique. Infundibular stenosis is an acquired condition usually associated with inflammation or stones. Reported series of percutaneously treated infundibular stenosis are few. In contrast with a calyceal diverticulum, infundibular stenosis is a more difficult entity to treat with only a 50-76% success rate by percutaneous techniques. Currently, percutaneous nephroscopic resection of transitional cell carcinoma in the renal calyx can be applied in indicated cases.

Keyword

Diverticulum; Hydrocalycosis; Percutaneous nephrostomy; Transitional cell carcinoma; Urinary calculi

MeSH Terms

Calculi
Carcinoma, Transitional Cell
Constriction, Pathologic
Diverticulum
Drainage
Humans
Inflammation
Kidney Calculi
Lithotripsy
Nephrostomy, Percutaneous
Regeneration
Shock
Stents
Ureter
Ureteroscopy
Urinary Calculi

Figure

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  FIG. 1 Percutaneous nephrolithotomy (PNL) with 8 ports in a solitary kidney. (A) Staghorn calculi with narrow infundibulum. (B) After first PNL with 3 ports (arrows). (C) After second PNL with 5 more ports.

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  FIG. 2 Arteriovenous fistula from percutaneous nephrolithotomy (PNL). (A) Angiographic appearance. (B) After successful selective arterial embolization.

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  FIG. 3 Ascending colon injury of percutaneous nephrolithotomy (PNL) performed in a patient with a retrorenal colon. Extravasated contrast medium is seen in the transverse and descending colon.

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  FIG. 4 Tuberculous infundibular stenosis. (A) Retrograde pyelography showing dilated upper calyces and severely narrowed infundibular neck. (B) Schematic diagram of percutaneous endoinfundibulotomy.

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