Postoperative bleeding grading Postoperative bleeding grading Number (n=61) Rate (%) Intraabdominal bleeding Grade A 3 4, 9 Grade B 2 3, 3 Grade C 2 3, 3 Gastrointestinal bleeding Grade A 3 4, 9 Grade B 6 9, 8 Grade C 1 1, 6 Comments: Postoperative intra-abdominal bleeding occurred in 11.5% of cases, and gastrointestinal bleeding occurred in 16.3%.