Fig. 2From: Risk factors for difficulty of laparoscopic cholecystectomy in grade II acute cholecystitis according to the Tokyo guidelines 2013Study flow chart. AC: Acute cholecystitis. LC: Laparoscopic cholecystectomy. PTGBD: Percutaneous transhepatic gallbladder drainage. DLC: Difficult laparoscopic cholecystectomy. NDLC: Nondifficult laparoscopic cholecystectomyBack to article page