Laparoscopic distal pancreatectomy: which factors are related to open conversion? Lessons learned from 68 consecutive procedures in a high volume pancreatic center

Abstract

Background: Laparoscopic distal pancreatectomy represents a difficult surgical procedure with an high conversion rate to open procedure. The factors related to its difficulty and to conversion to open distal pancreatectomy were rarely reported. The aim of the present study was to identify which factors are related to conversion from laparoscopic to open distal pancreatectomy. Methods: A retrospective study of a prospective database of 68 patients who underwent laparoscopic distal pancreatectomy was conducted at a high-volume center by pancreatic surgeons experienced with laparoscopic surgery. Pre-intra and postoperative data were collected. Patients who completed a laparoscopic distal pancreatectomy were compared with those who needed a conversion to the open approach as regards demographic, clinical, radiological and surgical data. Univariate and multivariate analyses were carried out. Results: Univariate analysis suggested that the site of the lesion, the extension of pancreatic resection and the requirement for an extended procedure to adjacent organs were significantly associated with the risk of conversion to the open approach. Multivariate analysis showed that only the extension of the pancreatic resection (subtotal pancreatectomy) was significantly related to the odds of conversion (odds ratio (OR) 19.5; 95% confidence interval (CI) 1.1-32.3; P=0.038). Preoperative suspicion of malignancy differed between the two groups; however, this difference did not reach statistical significance (P=0.078). Conclusions: Despite the limitations of the study, only the extension of pancreatic resection seemed to be the main factor related to conversion during laparoscopic distal pancreatectomy.