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Table 2 Imaging characteristics of anterior mediastinal cystic lesions on chest MRI

From: Characteristics and outcomes of anterior mediastinal cystic lesions diagnosed on chest MRI: implications for management of cystic lesions

 

Probable cyst (n = 186)

Indeterminate lesion (n = 18)

Size, mma

24 (18–33)

39 (22–54)

Morphologic feature

 Unilocular and nonlobulated

140 (75.3)

8 (44.4)

 Unilocular and lobulated

34 (18.3)

2 (11.1)

 Multilocular and lobulated

12 (6.5)

8 (44.4)

T2-weighted image

 High signal intensity

186 (100.0)

16 (88.9)

 Intermediate or low signal intensity

0 (0)

2 (11.2)

 Signal intensity, mean

  

   Meana

201.8 (138.5–354.2)

163.6 (111.9–208.1)

   SDa

44.0 (32.2–60.7)

54.1 (32.7–109.7)

Pre-contrast T1-weighted image

 High signal intensity

62 (33.3)

13 (72.2)

 Low or intermediate signal intensity

124 (66.7)

5 (27.8)

 Signal intensity

  

   Meana

150.0 (99.1–223.5)

163.3 (139.8–262.1)

   SDa

24.6 (17.2–39.7)

47.5 (18.0–64.5)

Diffusion-weighted image

 No restriction

186 (100.0)

14 (77.8)

 Diffusion restriction

0 (0)

4 (22.2)

 ADC value

  

   Meana

3.1 (2.7–3.6)

1.8 (1.4–2.5)

   SDa

0.3 (0.2–0.5)

0.4 (0.2–0.6)

Contrast-enhanced T1-weighted image

 No enhancement

140 (75.3)

0 (0)

 Thin and smooth wall enhancement

46 (24.7)

3 (16.7)

 Eccentric enhancing wall thickening

0 (0)

13 (72.2)

 Nodular enhancement

0 (0)

8 (44.4)

  1. Unless indicated otherwise, data are percentages in parentheses
  2. aData are median with interquartile ranges in parentheses
  3. ADC apparent diffusion coefficient, SD standard deviation