Retrospective Cohort Study
Copyright ©The Author(s) 2017.
World J Gastroenterol. Jan 21, 2017; 23(3): 478-485
Published online Jan 21, 2017. doi: 10.3748/wjg.v23.i3.478
Table 2 Clinicopathological findings associated with intraoperative perforation during endoscopic submucosal dissection n (%)
Perforated group
Non-perforated group
P value
n = 9n = 147
Age, mean ± SD67.9 ± 9.768.1 ± 7.50.929
Sex
Male9 (100)131 (89.1)
Female0 (0)16 (10.9)0.599
History of treatment for esophageal carcinoma, n (%)
Yes0 (0)17 (11.6)
No9 (100)130 (88.4)0.599
Maximum dimension of lesion, mean ± SD, mm42.9 ± 19.330.8 ± 14.10.016
Mucosal deficiency ≥ 75% circumference, n (%)
Yes7 (77.8)45 (30.6)
No2 (22.2)102 (69.4)0.007
Location
Upper0 (0)8 (5.4)
Middle4 (44.4)79 (53.7)
Lower5 (55.6)60 (40.8)0.697
Depth of invasion
M6 (66.7)125 (85.0)
SM3 (33.3)22 (15.0)0.158
Predominant site
Right4 (44.4)98 (66.7)
Left5 (55.6)49 (33.3)0.277
Operator
Instructor6 (66.7)94 (63.9)
Novice3 (33.3)53 (36.1)1.00
Procedure time, mean ± SD, min183.8 ± 48.7102.4 ± 46.7< 0.001
En bloc resection3 (33.3)138 (93.9)< 0.001