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Table 2: Frequency and severity of unilateral brain abnormalities in patients with Parry-Romberg syndrome and epilepsy compared with cases without epilepsy^{^a}
Nonepilepsy (n = 64) Epilepsy (n = 16) P Value Categories P Value Overall
Hemispheric atrophy 
    None 61 (95%) 8 (50%) <.001 <.001
    Mild 1 (1.6%) 1 (6%)
    Moderate 1 (1.6%) 3 (19%)
    Severe 1 (1.6%) 4 (25%)
WMD 
    None 49 (77%) 2 (12%) <.001 <.001
    Mild 10 (15%) 7 (44%)
    Moderate 2 (3%) 4 (25%)
    Severe 3 (5%) 3 (19%)
Hemispheric microhemorrhage 
    None 61 (95%) 13 (81%) .015 .091
    Mild 3 (5%) 1 (6%)
    Moderate 0 0
    Severe 0 2 (12%)
Leptomeningeal enhancement 
    Absent 63 (98%) 15 (94%) .362 
    Present 1 (1.6%) 1 (6%)
↵a Some patients had more than 1 finding.

	Nonepilepsy (n = 64)	Epilepsy (n = 16)	P Value Categories	P Value Overall
Hemispheric atrophy
None	61 (95%)	8 (50%)	<.001	<.001
Mild	1 (1.6%)	1 (6%)
Moderate	1 (1.6%)	3 (19%)
Severe	1 (1.6%)	4 (25%)
WMD
None	49 (77%)	2 (12%)	<.001	<.001
Mild	10 (15%)	7 (44%)
Moderate	2 (3%)	4 (25%)
Severe	3 (5%)	3 (19%)
Hemispheric microhemorrhage
None	61 (95%)	13 (81%)	.015	.091
Mild	3 (5%)	1 (6%)
Moderate	0	0
Severe	0	2 (12%)
Leptomeningeal enhancement
Absent	63 (98%)	15 (94%)	.362
Present	1 (1.6%)	1 (6%)	.362