Table 3. Comparison of follow-up MRI scans in MS and NMOSD patients.

	MS	NMOSD	p
Number of patients	22	10	-
Sex, male:female	5:17	0:10	0.264
Age, years	33.2±9.5	51.8±13.7	<0.001
Disease duration to first MRI scan, months	30.9 [4.3–54.4]	30.2 [0.4–185.2]	0.617
Disease duration to last MRI scan, months	42.3 [13.0–66.9]	37.9 [13.4–197.7]	0.675
Follow-up duration, months	15.8 [10.7–26.4]	14.2 [9.7–16.6]	0.204
EDSS score	1.2 [1.0–2.5]	3.0 [1.5–3.5]	0.029
Per-patient analysis
New T2-weighted lesions	12/22 (54.5)	5/10 (50.0)	1.000
New lesions with paramagnetic rims	8/22 (36.4)	1/10 (10.0)	0.266
New contrast-enhanced lesions	5/22 (22.7)	3/10 (30.0)	1.000
Number of lesions	12 [6–16]	8 [3–19]	0.554
Numbers of lesions with paramagnetic rims	3.5 [1–8]	0 [0–0]	0.002
Per-lesion analysis
Number of lesions at last MRI scan	282	105
New T2-weighted lesions	33 (11.7)	33 (31.4)	<0.001
New paramagnetic rims	19 (6.7)	19 (18.1)	0.002

Data are mean±standard deviation, n (%), or median [interquartile range] values.

EDSS: Expanded Disability Status Scale, MRI: magnetic resonance imaging, MS: multiple sclerosis, NMOSD: neuromyelitis optica spectrum disorder.