[Anastomotic leakage after anterior resection for rectal cancer].

On the basis of the literature about anastomotic leakage after anterior resection for rectal cancer a review is presented of the frequency, potential risk factors and consequences of leakage. The risk factors are evaluated according to the level of scientific evidence of the individual background articles, and based upon the best documented risk factors recommendations are proposed for prophylactic measures against anastomotic leakage. Furthermore, proposals for future research in the area are presented.