“…The harmonic scalpel is used in many different operations, including cholecystectomy [2,5,8] , appendectomy [2,9] , fenestration of abdominal cysts [2,10] , reflux esophagitis procedures [11] , large bowel operations [12][13][14] , stomach resection [15][16][17] , liver resection [18] , splenectomy [19] , and fenestration of non-parasitic spleen and liver cysts [20][21][22] . Recently, the harmonic scalpel has been used in transanal endoscopic microsurgery [23][24][25] , endoscopic inguinal and abdominal wall hernia operations [2,26,27] , and hemorrhoidectomy [28] .…”