Preoperative Preparation

Magnetic resonance imaging or computed tomography utilizing 3-mm axial cuts with and without enhancing contrast is used to delineate the tumor. If planning a percutaneous approach, a computed tomography in a prone or flank position can be helpful in avoiding needle access problems on the day of the procedure (15). In particular, it may reveal an impediment to the potential needle pathway by bowel or other organs. The prone position may also shift the kidney anteriorly to allow access to a tumor that otherwise would have been inaccessible on the supine view.

Preoperative preparations include blood coagulation screening, urine cultures, electrolytes, and creatinine. Patients are instructed to take a bowel preparation solution, such as magnesium citrate, the day before surgery.

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