The results of treatment in patients with acute or chronic calculous cholecystitis were analyzed. Each case of laparoscopic cholecystectomy demanded a conversion to conventional operation. The causes of conversion were inflammatory infiltrates, adhesive process in the gallbladder area, bleeding from the gallbladder bed and the vesicle artery, biliobiliary and biliodigestive fistulas, bile duct damage, choledocholithiasis. Three types of surgical incisions were used: miniincision of the right hypochondrium, the Kocher incision of the right upper quadrant region and upper-middle laparotomy. The incisions should be applied individually taking into account the patient’s specific surgical situation. It allows to improve the results of treatment in patients with calculous cholecystitis and to reduce economic costs.