Authors in this article emphasize the wide use of laparoscopic cholecystectomy in gall bladder surgery. Indications for laparoscopic operations are increasing. In spite of increasing practical experience of surgeons, availability of new instruments, advances of techniques, this problem of conversion is always actual. The question of conversion may depend on subjective and objective causes. It's the decision of the surgeon whether a conversion is necessary taking into account uncomplicated operation and postoperative state of the patient. In the Surgery clinic of FN Nitra 2078 cholecystectomies were performed in the period from 1.1.2002 to 31.1. 2007. Out of this number, there were 1535 (74%) laparoscopic operations and 543 (26%) classic operations. From the group of 1535 laparoscopic operations conversion was necessary in 89 patients (5.7%) (Tab. 4, Ref. 9).