OBJECTIVE: To describe the absence of the arcuate fasciculi in 2 cases of congenital bilateral perisylvian syndrome (CBPS). DESIGN: Case series. SETTING: Pediatric referral hospital-based study. PATIENTS: Two patients with CBPS, referred to our institution as candidates for surgical treatment of epilepsy. Intervention Diffusion tensor imaging (1.5-T scanner; 15 encoding directions; b = 800 s/mm(2)) and deterministic tractography of the main projection and association tracts. MAIN OUTCOME MEASURES: Neuropsychology evaluation; fractional anisotropy, apparent diffusion coefficients, and anatomical aspect of the tracts. RESULTS: Absence of the arcuate fasciculus was observed in both subjects. Ancillary findings were complete absence of the superior longitudinal fasciculi in 1 case and underdevelopment in the other. Low fractional anisotropy of the left inferior occipitofrontal fasciculus was found in both cases. The same tract was maloriented in 1 of the cases. CONCLUSION: Agenesis of the arcuate fasciculus may accompany CBPS.
OBJECTIVE: To describe the absence of the arcuate fasciculi in 2 cases of congenital bilateral perisylvian syndrome (CBPS). DESIGN: Case series. SETTING: Pediatric referral hospital-based study. PATIENTS: Two patients with CBPS, referred to our institution as candidates for surgical treatment of epilepsy. Intervention Diffusion tensor imaging (1.5-T scanner; 15 encoding directions; b = 800 s/mm(2)) and deterministic tractography of the main projection and association tracts. MAIN OUTCOME MEASURES: Neuropsychology evaluation; fractional anisotropy, apparent diffusion coefficients, and anatomical aspect of the tracts. RESULTS: Absence of the arcuate fasciculus was observed in both subjects. Ancillary findings were complete absence of the superior longitudinal fasciculi in 1 case and underdevelopment in the other. Low fractional anisotropy of the left inferior occipitofrontal fasciculus was found in both cases. The same tract was maloriented in 1 of the cases. CONCLUSION: Agenesis of the arcuate fasciculus may accompany CBPS.
Authors: William W Lewis; Mustafa Sahin; Benoit Scherrer; Jurriaan M Peters; Ralph O Suarez; Vanessa K Vogel-Farley; Shafali S Jeste; Matthew C Gregas; Sanjay P Prabhu; Charles A Nelson; Simon K Warfield Journal: Cereb Cortex Date: 2012-06-01 Impact factor: 5.357
Authors: P Ellen Grant; Kiho Im; Banu Ahtam; Cynthia T Laurentys; Wai-Man Chan; Maya Brainard; Sheena Chew; Marie Drottar; Caroline D Robson; Irene Drmic; Elizabeth C Engle Journal: Cereb Cortex Date: 2019-07-22 Impact factor: 5.357