Figure 1

The operative trend during the nine-year period of study, with regard to the approaches performed. The study started when the laparoscopic cholecystectomy had already become the standard of care at our Department, replacing the open approach in most uncomplicated patients. A residual of the previous trend is evident at the beginning of the 1999, when the percentage of open cholecystectomy was higher. VLS: laparoscopic cholecistectomies; OPEN: open cholecystectomies; CONV: conversions.