Where are nephrostomy stents placed?

Nephrostomy stents are specifically designed to be placed in the renal calyces, which are part of the kidney where urine collects before flowing into the ureter. This procedure is typically carried out to provide a means of drainage when there is an obstruction in the urinary tract, such as due to kidney stones, tumors, or other conditions that impede the normal flow of urine.

By placing the stent in the renal calyces, it allows for the diversion of urine directly from the kidney to an external collection bag, thereby relieving pressure and preventing kidney damage. This targeted placement is essential for effective management of urinary obstructions and is a common practice in interventional radiology. Understanding the anatomical location and physiological function of nephrostomy stents is crucial for those practicing in this field.