All the patients n = 21

With sequelae n = 11

Whitout sequelae n = 10

Difference between the 2 groups: Statistical significance

Bilateral lesions

16 (76)

9 (82)

7 (70)

NS

Asymmetrical lesions

13 (62)

7 (64)

6 (60)

NS

Mean number of lesions

5,3

5,9

4,6

NS

Cortical lesion

9 (43)

6 (55)

3 (30)

NS

Lesions of the sub-cortical white matter

10 (48)

6 (55)

4 (40)

NS

Lesions of the deep and periventricular white matter

6 (29)

4 (36)

2 (20)

NS

Localisation of the lesions

Frontal

8 (38)

7 (64)

1 (10)

p = 0.011

Temporal

6 (29)

5 (45)

1 (10)

NS

Parietal

7 (33)

6 (55)

1 (10)

p = 0.031

Occipital

4 (19)

3 (27)

1 (10)

NS

Insula

3 (14)

1 (9)

2 (20)

NS

Thalamus

7 (33)

3 (27)

4 (40)

NS

Basal ganglia

10 (48)

4 (36)

6 (60)

NS

Caudate nucleus

5 (24)

3 (27)

2 (20)

NS

Putamen and globus pallidus

8 (38)

5 (45)

3 (30)

NS

Brainstem

4 (19)

3 (27)

1 (10)

NS

Midbrain

2 (10)

2 (18)

0 (0)

NS

Pons

3 (14)

2 (18)

1 (10)

NS

Medulla oblongata

3 (14)

2 (18)

1 (10)

NS

Cerebral peduncles

6 (29)

2 (18)

4 (40)

NS

Corpus callosum

0 (0)

0 (0)

0 (0)

Internal capsule

3 (14)

2 (18)

1 (10)

NS

Cerebellum

4 (19)

2 (18)

2 (20)

NS

Cerebellar peduncles

3 (14)

2 (18)

1 (10)

NS

Spinal cord

1 (5)

0 (0)

1 (10)

NS

Optic nerves

0 (0)

0 (0)

0 (0)

Enhancement after gadolinium injection^*

3/15 (20)

2/6 (33)

1/9 (11)

NS

Restricted diffusion

4/20 (20)

3/10 (30)

1/10 (10)

NS

T1 hyposignal

4 (19)

2 (18)

2 (20)

NS