BackgroundLaparoscopic partial nephrectomy (LPN) is the standard of care for localized small renal cancer. The most critical step in this form of surgery is to localize the renal artery. In the present study. we describe a novel technique that uses the left lumbar vein (LV) to access the left renal artery during LPN. https://www.relicsbook.com/product-category/vertical-flags/