An endoscope would be inserted in the mouth, and down into the stomach after the induction of general anesthesia. Following the insertion of the endoscope, the powered stapler will be passed alongside the endoscope to help the surgeon and gastroenterologist (working as a team) to see where to properly place the stapler. If a connection has been previously made between the stomach and pseudocyst, the stapler will be maneuvered into the proper position. If a connection has not yet been made, this will be done during the procedure with the aid of an endoscopic ultrasound probe passed through the mouth. Once the stapler is in position, one jaw of the stapler will be placed into the pseudocyst, and the other jaw will be left in the stomach. The stapler will then be closed and fired, creating a permanent connection between the two hollow spaces and allow the contents of the pseudocyst to drain naturally out into the stomach and intestines. The stapler and the endoscope are then removed and the anesthesia is allowed to wear off. Utilizing this technique, a surgical incision is avoided.