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Table 1 Clinicopathologic characteristics of 169 patients with 175 superficial esophageal squamous cell carcinomas in this study

From: Endoscopic submucosal dissection under general anesthesia for superficial esophageal squamous cell carcinoma is associated with better clinical outcomes

Variables

 

Age (years)

64.5 ± 7.9

Gender, male

157 (92.9)

Body mass index (Kg/m2)

23.6 ± 2.9

Smoking

 Current smoker

32 (18.9)

 Ex-smoker

81 (47.9)

 Never-smoker

56 (33.1)

Alcohol

 None

95 (56.2)

 > 1 day/month

18 (10.7)

 > 1 day/week

27 (16.0)

 > 4 days/week

29 (17.2)

Diabetes mellitus (yes)

25 (14.8)

Hypertension (yes)

51 (30.2)

Tumor location

 Upper thoracic

13 (7.4)

 Middle thoracic

46 (26.3)

 Lower thoracic

113 (64.6)

 Esophagogastric junction

3 (1.7)

Tumor morphology

 IIa

26 (14.9)

 IIb

125 (71.4)

 IIc

21 (12.0)

 Mixed

3 (1.7)

Gross tumor size (cm)

1.5 ± 0.9

Pathologic tumor size (cm)

1.5 ± 0.8

Histologic differentiation

 Well differentiated

34 (19.4)

 Moderately differentiated

140 (80.0)

 Poorly differentiated

1 (0.6)

Circumferential size of the tumor (of lumen)

 <  1/4

50 (28.6)

 ≥ 1/4, <  1/2

109 (62.3)

 ≥ 1/2, <  3/4

16 (9.1)

 ≥ 3/4

0 (0)

Circumferential size of the post-ESD mucosal defect (of lumen)

 <  1/4

5 (2.9)

 ≥ 1/4, <  1/2

68 (38.9)

 ≥ 1/2, <  3/4

85 (48.6)

 ≥ 3/4

17 (9.7)

Depth of tumor invasion

 M1

26 (14.9)

 M2

71 (40.6)

 M3

42 (24.0)

 SM1

10 (5.7)

 SM2&3

26 (14.9)

Method of sedation

 Conscious sedation

93 (53.1)

 General anesthesia

82 (46.9)

  1. Data are presented as mean ± SD or number (%) of patients or lesions