nephrostomy

Establishment of an opening between the collecting system of the kidney through its parenchyma to the exterior of the body; may be performed by surgical incision or be placed percutaneously. [nephro- + G. stoma, mouth]

- percutaneous n. drainage of the collecting system through a catheter inserted through the skin of the flank under fluoroscopic control, usually using the Seldinger technique.

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ne·phros·to·my ni-'fräs-tə-mē n, pl -mies the surgical formation of an opening between a renal pelvis and the outside of the body

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n.

drainage of urine from the kidney by a tube (catheter) passing through the kidney via the skin surface. This is commonly used as a temporary procedure after operations on the kidney. Long-term urine drainage by nephrostomy may be complicated by the attendant problems of infection and obstruction of the catheter by debris. Nephrostomy is also performed to enable the passage of a nephroscope.

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ne·phros·to·my (nə-frosґtə-me) [nephro- + -stomy] insertion of a catheter from the surface of the skin through the renal parenchyma into the renal pelvis, under the sonographic or fluoroscopic guidance, as for urinary diversion or insertion of a catheter, or to gain access to the upper urinary tract as for dilation of a stricture or removal of a calculus. Called also percutaneous n.

Nephrostomy, with a subcostal point of entry and the guidewire advanced into the ureter.