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Table 2 Patient demographics and tumor characteristics

From: The significance of ectopic crypt formation in the differential diagnosis of colorectal polyps

  

CA group

 

Parameters

TSA group (n = 107)a

TA(n = 106)b

TVA (n = 66)b

VA (n = 19)

p

Mean age (y)

61.2

63.3

62.6

59.7

0.345

(range)

(30-81)

(31-85)

(37-80)

(34-79)

Gender

    

0.634

Woman

49

42

31

10

 

Man

55

62

34

9

 

Tumor location

    

<0.001

Proximal

27 (25.2%)

62 (58.5%)

30 (45.5%)

2 (10.5%)

 

Distal

80 (74.8%)

44 (41.5%)

36 (54.5%)

17 (89.5%)

 

Mean tumor size (cm)

1.3

2.7

3.2

3.6

<0.001

Procedure

    

NA

Polypectomy

37 (34.6%)

0

0

0

 

EMR

57 (53.3%)

5 (4.7%)

4 (6.1%)

0

 

ESD

12 (11.2%)

101 (95.3%)

62 (93.9%)

19 (100%)

 

Transanal excision

1 (0.9%)

0

0

0

 
  1. TSA, traditional serrated adenoma; CA, conventional adenoma; TA, tubular adenoma; TVA, tubulovillous adenoma; VA, villous adenoma; NA, not applicable; EMR, endoscopic mucosal resection; ESD, endoscopic submucosal dissection.
  2. a107 TSAs from 104 patients.
  3. b191 CAs from 188 patients.