The average age was 62.9 (range 20 - 84), rectal tumor location: The upper third, middle third, and lower third was 27.5%, 48.3%, and 24.2%, respectively.
Tuổi trung bình là 62,9, vị trí u 1/3 trên, 1/3 giữa và 1/3 dưới lần lượt là 27,5%, 48,3% và 24,2%.