Retrospective Study
Copyright ©The Author(s) 2018.
World J Gastroenterol. Apr 21, 2018; 24(15): 1632-1640
Published online Apr 21, 2018. doi: 10.3748/wjg.v24.i15.1632
Table 1 Study demographics and clinicopathologic characteristics n (%)
CharacteristicsValue
Number of patients70
Number of lesions96
Age, mean ± SD (range), yr67 ± 10 (43-87)
Sex
Male59 (84)
Female11 (16)
Location of the tumor in the esophagus
Upper one-third11 (11)
Middle one-third53 (55)
Lower one-third33 (34)
Gross appearance
Depressed86 (90)
Elevated7 (7)
Flat2 (2)
Mixed1 (1)
Resected specimen size, mean ± SD (range), mm33 ± 14 (9-75)
Resected tumor size, mean ± SD (range), mm24 ± 13 (1-64)
Luminal extent
< 1/259 (61)
≥ 1/2, < 2/320 (21)
≥ 2/317 (18)
Histopathologic features
Dysplasia/intraepithelial neoplasia21 (22)
Squamous cell carcinoma75 (78)
Epithelial lining15 (20)
Lamina propria mucosae31 (41)
Muscularis mucosae13 (17)
Submucosa (SM1)2 (3)
Submucosa (SM2 or deeper)14 (19)
Table 2 Short-term outcomes and adverse events of esophageal endoscopic submucosal dissection, n %
95%CI
Procedure duration, median (range)60 (25-305)
En bloc resection96 (100) [96.2-100]
Complete resection with negative margins91 (95) [88.4-97.8]
Curative resection78 (81) [72.3-87.8]
Adverse events
Perforation0 (0) [0-3.9]
Delayed bleeding0 (0) [0-3.9]
Pneumonia3 (3) [1.1-8.8]
Esophageal stricture7 (7) [3.6-14.3]