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Table 3 MRI features of papillomas manifesting as mass lesions

From: Magnetic resonance imaging features for differentiating breast papilloma with high-risk or malignant lesions from benign papilloma: a retrospective study on 158 patients

Variables

Group A

(n = 105)

Group B

(n = 30)

P value

Size (mm)

8.2 (6.2–9.8)

9.3 (7.6–14.4)

0.020

Size (mm)

  

0.009

 ≤ 10 mm

84 (80.0%)

17 (56.7%)

 

 > 10 mm

21 (20.0%)

13 (43.3%)

 

Location

  

0.782

 Anterior third of the breast

52 (49.5%)

14 (46.7%)

 

 Middle or posterior third of the breast

53 (50.5%)

16 (53.3%)

 

Number of mass

  

0.604

 Solitary

65 (61.9%)

17 (56.7%)

 

 Multiple

40 (38.1%)

13 (43.3%)

 

Shape

  

0.299

 Oval or round

83 (79.0%)

21 (70.0%)

 

 Irregular

22 (21.0%)

9 (30.0%)

 

Margin

  

0.267

 Circumscribed

71 (67.6%)

17 (56.7%)

 

 Non-circumscribed

34 (32.4%)

13 (43.3%)

 

Mass type

  

0.340

 Solid mass

96 (91.4%)

25 (83.3%)

 

 Complex cystic mass

6 (5.7%)

4 (13.3%)

 

 Cystic mass

3 (2.9%)

1 (3.3%)

 

Duct dilation

45 (42.9%)

20 (66.7%)

0.021

Mixed mass-NME lesion

20 (19.0%)

15 (50.0%)

0.001

TIC

  

0.623

 Persistent

38 (36.2%)

8 (26.7%)

 

 Plateau

31 (29.5%)

10 (33.3%)

 

 Washout

36 (34.3%)

12 (40.0%)

 

ADC value (× 10−3 mm/s2)*

1.33 ± 0.22

1.29 ± 0.13

0.565

  1. TIC = time-signal intensity curve; ADC = apparent diffusion coefficient
  2. *ADC values of 51 cases of benign papillomas and 12 cases of the non-benign papillomas were available