Laparoscopy, which has been well known as a diagnostic procedure for more than a century, has recently established itself as an important therapeutic procedure in several branches of surgery. In the present study the authors report on 221 patients over a 10-year period (1991-2001), admitted to hospital with a diagnosis of acute abdomen or abdominal trauma. All patients were submitted to emergency laparoscopic surgery; 128 patients (57%) presented acute appendicitis, 40 (18%) acute cholecystitis, 13 (6%) occlusive ileus, 10 (5%) adnexal pathologies, 9 (4%) perforation of abdominal viscera, 3 (1.4%) acute diverticulitis, 3 (1.4%) subdiaphragmatic abscesses, 3 (1.4%) intestinal infarction, 2 (0.8%) other diseases and 10 (5%) abdominal trauma. The operation was completed laparoscopically in 192 cases (87%), while conversion to laparotomy proved necessary in 29 cases (13%). The morbidity of the cases completed laparoscopically was 3%, the mortality 0.5%, and the mean hospital stay 4 days. Advantages of laparoscopy (shorter hospital stay, rapid postoperative recovery and faster return to social activities) emerge from the present study and are confirmed by the literature. The possibility of combining a diagnostic procedure with curative therapy suggests that laparoscopy may have an important role in emergency surgery, demonstrating its efficacy also in acute abdominal syndromes. Nevertheless, emergency laparoscopic surgery is still a technically difficult procedure that needs to be performed by an expert surgical team.