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A nephrostomy or percutaneous nephrostomy is an artificial opening created between the kidney and the skin which allows for the urinary diversion directly from the upper part of the urinary system (renal pelvis). [2] It is an interventional radiology/surgical procedure in which the renal pelvis is punctured whilst using imaging as guidance.
Percutaneous nephrostomy: A nephrostomy is created when the flow of urine is diverted directly from the kidneys to the abdominal wall. Tubes are placed within the kidney to collect the urine as it is generated, and transport it to the abdominal wall.
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Percutaneous nephrostomy or nephroureteral stent placement: Placement of a catheter through the skin, directly into the kidney to drain from the collecting system. This is typically done to treat a downstream obstruction of urine.
Percutaneous nephrolithotomy (PCNL) is a minimally-invasive procedure to remove stones from the kidney by a small puncture wound (up to about 1 cm) through the skin. It is most suitable to remove stones of more than 2 cm in size and which are present near the pelvic region.
Sonography is the modality of choice for guidance when performing intervention in the kidney, whether it is kidney biopsy, percutaneous nephrostomy or abscess drainage. Historically, thermal ablation of renal tumors is performed under CT guidance, as the risk of injuring neighboring intestines during the US-guided procedure was considered too ...
Nephrostomy · Ureterostomy · Cystostomy (Suprapubic cystostomy) · Urostomy: Nephrotomy: Nephropexy · Urethropexy · Lithotripsy · Kidney transplantation · Renal biopsy: Male reproductive: Phalloplasty · Scrotoplasty: Vasectomy · Penectomy · Orchidectomy · Prostatectomy · Posthectomy · Gonadectomy
It is done in cases where excretory or retrograde pyelography has failed or contraindicated, or when a nephrostomy tube is in place or delineation of upper tract is desired. It is commonly used to diagnose upper tract obstruction, hydronephrosis , and ureteropelvic junction obstruction.