Retrospective Study
Copyright ©The Author(s) 2022.
World J Gastrointest Surg. Feb 27, 2022; 14(2): 174-184
Published online Feb 27, 2022. doi: 10.4240/wjgs.v14.i2.174
Table 1 Characteristics of the study cohort stratified by surgical method
Total (n = 166)CM (n = 133)PPM (n = 33)P value
Female, n (%)129 (77.7)106 (77.4)23 (69.7)0.16
Age (yr), median (range)32.5 (10-68)32.0 (10-68)33 (13-51)0.85
Symptoms, n (%)
Accidentally found104 (62.7)83 (62.4)21 (63.6)0.84
Abdominal pain53 (31.9)43 (32.3)10 (30.3)0.75
Abdominal distension6 (3.6)5 (3.8)1 (3.0)0.8
Nausea and vomiting2 (1.2)1 (0.8)1 (3.0)0.49
Jaundice1 (0.6)1 (0.8)0 (0)0.32
Hospital stay (d) ± SD 12.53 ± 6.8712.35 ± 6.2113.3 ± 9.140.49
Total expense (yuan) ± SD46248 ± 2541444213 ± 2048754084 ± 385510.21
Table 2 Intraoperative index and pathological outcomes of the study cohort stratified by surgical method

Total (n = 166)
CM (n = 133)
PPM (n = 33)
P value
Intraoperative index
Surgical approach, n (%)0.126
laparotomy139 (80.1)108 (81.2)31 (93.9)
laparoscopic13 (7.8)11 (8.3)2 (6.1)
Robot14 (8.4)14 (10.5)0 (0)
Surgeon experiences, mean (yr)19.319.019.50.85
Operation duration, median (range)135 (27-381)135 (27-381)120 (50-301)0.71
Intraoperative bleeding volume, median (± SD)200 (0-2000)200 (0-2000)100 (50-600)0.488
Pathological outcomes
Median size (mm), median (range)40 (3.5-140)45 (3.5-140)32 (17-140)0.069
Tumor location, n (%)0.001a
Head69 (41.6)46 (34.6)23 (69.7)
Body19 (11.4)15 (11.3)4 (12.1)
Tail17 (10.2)17 (12.8)0 (0)
Multiple sites64 (38.6)55 (41.4)6 (18.2)
Ki67 index, n (%)0.53a
I141 (84.9)115 (86.5)26 (78.8)
II22 (13.3)16 (12.0)6 (18.2)
III3 (1.8)2 (1.5)1 (3.0)
Peripheral tissue invasion, n (%)18 (10.8)15 (11.3)3 (9.1)0.426
Positive margin status, n (%)12 (7.2)10 (7.5)2 (6.0)0.283
Table 3 Short-term and long-term outcomes of the study cohort stratified by surgical method

Total (n = 166)
CM (n = 133)
PPM (n = 33)
P value
Short-term complications
Overall perioperative complication, n (%)33 (19.9)27 (20.3)6 (18.2)0.79
Severe POPF6 (3.6)5 (3.8)1 (3.0)0.85
delayed gastric emptying3 (1.8)3 (2.3)0 (0)0.56
abdominal infection13 (7.8)12 (9.0)1 (3.0)0.43
Bleeding5 (3.0)3 (2.3)2 (6.0)0.26
Pancreatitis2 (1.2)2 (1.5)0 (0)0.49
Multiple complications4 (2.4)2 (1.5)2 (6.0)0.18
Severe perioperative complication, n (%)9 (5.4)7 (5.3)2 (6.0)1.0
Long-term follow-up data
Recurrence, n (%)6 (3.6) 4 (3.0) 2 (6.0) 0.39
Local4 (2.4)3 (2.3)1 (3.0)
Distant2 (1.2)1 (0.8)1 (3.0)
Alimentary stricture, n (%) 6 (3.6) 5 (3.7) 1 (3.0)1.0
Endocrine insufficiency, n (%)7 (4.2)6 (4.5)1 (3.0)1.0
Exocrine insufficiency, n (%)30 (18.1)29 (21.8)1 (3.0)0.024