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Table 3 Comparison of brainstem MRI between anti-AQP4 (+) and anti-AQP4 (-) patients when the initial episode of ABS

From: The role of anti-aquaporin 4 antibody in the conversion of acute brainstem syndrome to neuromyelitis optica

MRIs

Anti-AQP4 (+)

Anti-AQP4 (-)

Total

P value

n = 14

n = 17

n = 31

Brainstem lesions

Sagittal view

 Pons

6/14 (42.86 %)

8/17 (47.06 %)

14/31 (45.16 %)

0.551

 Midbrain

3/14 (21.43 %)

5/17 (29.41 %)

8/31 (25.81 %)

0.466

 Medulla

11/14 (78.57 %)

6/17 (35.29 %)

17/31 (54.84 %)

0.019

Axial view

 Dorsal

11/14 (78.57 %)

7/17 (41.17 %)

18/31 (58.06 %)

0.04

 Ventral

3/14 (21.43 %)

10/17 (58.82 %)

13/31 (41.94 %)

0.04

Periependymal region

3/14 (21.43 %)

1/17 (5.88 %)

4/31 (12.90 %)

0.228

Area postrema

4/14 (28.57 %)

3/17 (17.64 %)

7/31 (22.58 %)

0.383

  1. ABS acute brainstem syndrome