A transanal drainage tube as a mechanism to reduce anastomotic leakage is proposed.
Transanal drainage tube reduces anastomotic leakage 3.6% vs. 13.6% (p = 0.007).
Transanal drainage reduced the grade of complication (e.g., Dindo ≧ 3b: 20.0% vs. 92.9%; p = 0.006).