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Retrospective Study
Copyright: ©Author(s) 2026.
World J Gastrointest Surg. Sep 27, 2026; 18(9): 122154
Published online Sep 27, 2026. doi: 10.4240/wjgs.122154
Table 4 Subgroup analysis of submucosal injection on postoperative outcomes, n (%)
Characteristics
Submucosal injection group (n = 65)
Non-submucosal injection group (n = 11)
P value
Complete resection63 (96.9)10 (90.9)0.379
Complications
Pancreatitis16 (24.6)1 (9.1)0.161
Cholangitis1 (1.5)2 (18.2)0.053
Bleeding2 (3.1)0 (0)1.000
Perforation0 (0)0 (0)1.000
Papillary stenosis1 (1.5)0 (0)1.000
Length of hospital stay, days, median (interquartile range)9.0 (8.0, 11.0)9.0 (7.0, 15.0)0.721
hospitalization expenses, CNY, median (interquartile range)30862.1 (27958.2, 36921.7)32147.9 (25346.0, 52082.6)0.935
Residual adenoma2 (3.1)1 (9.1)0.379
Recurrence0 (0)0 (0)1.000


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