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Table 3 Rectal cancer nodal morphological and enhancement characteristics on MR images versus histopathological findings in 440 nodes

From: Fat-suppressed gadolinium-enhanced isotropic high-resolution 3D-GRE-T1WI for predicting small node metastases in patients with rectal cancer

Radiologist

Radiologist 1

Radiologist 2

κ

Histopathologic Findings

Benign (330)

Malignant (111)

P

Benign (330)

Malignant (111)

P

Border

  

< 0.001

  

< 0.001

0.633

Smooth

319 (96.7%)

29 (26.1%)

 

305 (92.4%)

33 (29.7%)

  

Irregular

11 (3.3%)

82 (73.9%)

 

25 (7.6%)

78 (70.3%)

  

Signal homogeneity

  

< 0.001

  

< 0.001

0.611

Homogenous

230 (69.7%)

8 (7.2%)

 

225 (68.2%)

11 (9.9%)

  

Mild-heterogeneous

99 (30.0%)

46 (41.4%)

 

104 (31.5%)

59 (53.2%)

  

Obvious-heterogeneous

1 (0.3%)

57 (51.4%)

 

1 (0.3%)

41 (36.9%)

  

Enhancement degree

  

< 0.001

  

< 0.001

0.703

Obvious

277 (83.9%)

12 (10.8%)

 

287 (87.0%)

12 (10.8%)

  

Intermediate

46 (13.9%)

57 (51.4%)

 

32 (9.7%)

55 (49.5%)

  

Mild

7 (2.1%)

42 (37.8%)

 

11 (3.3%)

44 (39.6%)

  

Enhancement homogeneity

  

< 0.001

  

< 0.001

0.747

Homogeneous

223 (67.6%)

5 (4.5%)

 

210 (63.6%)

2 (1.8%)

  

Mild-heterogeneous

96 (29.1%)

12 (10.8%)

 

102 (30.9%)

14 (12.6%)

  

Obvious-heterogenous

2 (0.6%)

36 (32.4%)

 

3 (0.9%)

42 (37.8%)

  

Rim-like

9 (2.7%)

58 (52.3%)

 

15 (4.5%)

53 (47.7%)