Figure 3
From: Percutaneous ureteroscopy laser unroofing-a minimally invasive approach for renal cyst treatment

The surgical procedures for percutaneous ureteroscopy laser unroofing in the management of peripelvic cysts. (A) A ureteroscope was used to identify the wall (white arrow) adjacent to the renal pelvis. (B) The suspicious interior wall was punctured by the needle. (C) The wall was incised with a laser to create a permanent connection between the cyst (white arrow) and the adjacent renal collecting system (yellow arrow). (D) One end of a 6 F double-J stent (white arrow) was inserted into the cyst cavity.