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Table 2 Distribution of MR imaging lesions in the SI joints (four quadrants), in the spine (four regions), in the shoulder/pelvic girdle and the anterior chest wall

From: Whole body MR imaging in ankylosing spondylitis: a descriptive pilot study in patients with suspected early and active confirmed ankylosing spondylitis

SI Joints: Inflammatory Lesions (four quadrants)

 

Suspected Early AS Patients

Confirmed AS Patients

 

Patients

Lesions

Patients

Lesions

Superior Ileal

2

2

5

8

Inferior Ileal

8

13

8

16

Superior Sacral

3

3

6

9

Inferior Sacral

6

8

10

15

SI Joints: Fatty Replacement of Bone Marrow (four quadrants)

 

Suspected Early AS Patients

Confirmed AS Patients

 

Patients

Lesions

Patients

Lesions

Superior Ileal

2

2

2

2

Inferior Ileal

3

4

6

10

Superior Sacral

3

3

6

9

Inferior Sacral

4

5

9

17

Spine: Inflammatory Lesions

 

Suspected Early AS Patients

Confirmed AS Patients

 

Patients

Lesions

Patients

Lesions

C-Spine (C2/3-C7/T1)

2

2

3

5

Upper T-Spine (T1/2-T6/7)

3

6

6

17

Lower T-Spine (T7/8-T12/L1)

7

15

9

21

L-Spine (L1/2-L5/S1)

4

5

8

18

Shoulder/pelvic girdle and anterior chest wall: Inflammatory Lesions

 

Suspected Early AS Patients

Confirmed AS Patients

Sternoclavicular Joint

1

2

Manubriosternal Joint

2

4

Costosternal Junction

1

0

Acromioclavicular Joint

0

3

Glenohumeral Joint

0

0

Subacromial Bursa

0

1

Hip Joint

4

3

Greater Trochanter

0

1

Symphysis Pubis

0

1