Table 1 Clinical and MRI characteristics of patients with and without clinically isolated syndrome

MRI characteristic	<4 T2 hypersignals	4–8 T2 hypersignals	>9 T2 hypersignals	Gadolinium enhancement	Infratentorial lesions
No of patients (1st MRI)	4	5	21	9	10
CSF	1/4	1/5	8/21
VEP	1/4	2/5	6/21
No of patients (2nd MRI)	2	5	23	9	11
	Sex (F/M) (mean age (y))	Medical background	Positive VEP	Positive CSF	Barkhof criteria
With CIS (n = 10)	9/2 (31.9)	6	7	6	100% (>9 T2)
Without CIS (n = 20)	16/2 (36.3)	8	2	4	72% (>9 T2)

CIS, clinically isolated syndrome; CSF, cerebrospinal fluid; VEP, visual evoked potential.