Focal cortical dysplasia type IIb in the rolandic cortex: functional reorganization after early surgery documented by passive task functional MRI.

Abstract:

:Surgery for seizures arising from the rolandic area can be performed effectively, and accurate mapping of eloquent regions may improve seizure and functional outcome. Noninvasive cortical mapping is, however, hardly feasible in young children. We studied two children with epileptogenic focal cortical dysplasia (FCD) type IIb in the rolandic area, in whom preoperative passive task functional MRI (fMRI) during sedation helped planning a tailored surgical approach. In one patient the dysplastic cortex was functionally activated. After complete lesionectomy both children exhibited motor impairment that readily improved. Repeat fMRI, performed after complete (Patient 1) or partial (Patient 2) recovery, demonstrated relocation of motor-related activations posterior to the area of resection. fMRI during sedation can be used to demonstrate postsurgical functional reorganization of the motor cortex in young children. There is interindividual variability in functional activation of FCD type IIb.

journal_name

Epilepsia

journal_title

Epilepsia

authors

Barba C,Montanaro D,Frijia F,Giordano F,Blümcke I,Genitori L,De Masi F,Guerrini R

doi

10.1111/j.1528-1167.2012.03524.x

subject

Has Abstract

pub_date

2012-08-01 00:00:00

pages

e141-5

issue

8

eissn

0013-9580

issn

1528-1167

journal_volume

53

pub_type

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