Risk of peritoneal recurrence after laparoscopic versus open surgery for pT4 colon cancer. A propensity score-matched analysis from an international cohort.

Background: Peritoneal carcinomatosis (PC) is an uncommon site of recurrence for colon cancer (CC), but it strongly affects prognosis with poor survival after diagnosis. Since no standard treatment has been established yet, efforts should be addressed towards the prevention of its occurrence. In particular, some literature suggested a detrimental effect of laparoscopic surgery in case of pT4 CC. This study aimed to determine the impact of laparoscopy on the development of PC after potentially curative resection for pT4 CC.