Abstract
Laparoscopic retroperitoneal ureterolithotomy has many advantages over its tranperitoneal counterpart. In the retroperitoneal approach, the tissue planes and anatomy better mimics those of open ureteral surgery, something which most of us are familiar with. A retroperitoneal approach also avoids a breach into the peritoneal cavity. It respects the plane integrity of the retroperitoneal space in which the ureter is residing. However, the working space in the retroperitoneal approach is much smaller than in the transperitoneal approach, this might translate into difficulty in dissection and stitching. A transition from a transperitoneal to a retroperitoneal approach involves many technical issues. Placement of ports, planes identification, position of the assistant surgeon and potential complications are some issues that arise during this transition. In this study, we hope to show that a transition from a transperitoneal to a retroperitoneal approach can be done smoothly and safely.
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