| | Grades I/II | Grades III/IV | Grade V | All | Reoperation |
| | SSIs; intraabdominal abscess | 52 | 12 | | 64 | 4 | | Gastric or intestinal perforation | 2 | 13 | | 15 | 11 | | Postoperative ileus | 9 | 5 | | 14 | 2 | | Anastomotic leakage | 3 | 6 | 3 | 12 | 4 | | Urinary disturbance | 9 | 1 | | 10 | | | Intestinal fistula | 5 | 3 | 1 | 9 | 2 | | Postoperative bleeding | | 6 | 2 | 8 | 8 | | Sepsis | | | 3 | 3 | | | DIC | | 1 | 1 | 2 | | | Respiratory distress | | 1 | | 1 | | | Diaphragmatic hernia | | 1 | | 1 | 1 |
| | Total | 80 | 49 | 10 | 139 | 32 |
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