Distribution of patients according to radiopathologic categories and refractoriness to medication

Pathologic Features	Medication		P Value
Pathologic Features	Response (n)	Refractoriness (n)	P Value
Neoplastic lesion	8	5	.19
Malformations of cortical development	0	10	.001^a
Vascular lesions	7	2	.03
Atrophy/gliosis from acquired insults	4	4	.71
Other	1	3	.49
Normal	1	3	.62
Total	21	27	.004^b

↵a Statistical significance threshold after Bonferroni method, P = .008.
↵b P value obtained by Fisher exact test on the overall 2 × 6 contingency table (statistical significance threshold P = .05).