Acute calcolous cholecystitis (ACC) is a very common pathology in western countries. The aim of our work was to assess the epidemiology of ACC and its treatment in Bergamo, a northern Italy province, during the last seventeen years. A restrospective analysis, covering 1997 to 2013, was performed based on the administrative register of the province Health System. Only patients admitted for ACC were selected. From 1997 to 2013 were collected 8959 cases of ACC, mean age was 61.28, 51.5% were male. The incidence of ACC was 48/100.000 per year; the operation rate was 66%. Overall mortality was 0.7%, mean hospitalization time was 9.7 days. The treatment of ACC in Bergamo Province seemed to be acceptable and comparable to literature results. Over the last years, laparoscopy has become the standard treatment. This study outlined some criticisms on the selection's methodology sourcing data from administrative registers, raising questions about truthfulness of results and usefulness for health policy issues.