P.114 When functional neuroimaging is ambiguous for language localization: a case for Wada testing

Background: To localize cortical speech areas, methods such as fMRI are commonly used, but the Wada test can also determine whether a region is critical to particular task. We report case of left-handed patient with left frontal tumour in whom language paradigms produced both and right Broca’s Wernicke’s areas. Methods: All imaging used 3 Tesla Siemens Skyra scanner. The performed five tasks: word reading, picture naming, semantic questions, pseudohomophone generation. preprocessing statistical analyses for functional images were using Brain Voyager QX. Results: results revealed hemisphere dominance processing. A was order confirm regions speech. experienced arrest during test, thus confirming that despite bilateral activation, required production. Conclusions: This emphasizes importance preoperative assessing location eloquent cortices adjacent still warranted examining necessity when fails show clear left-lateralization.