Male, 23 years old, with history of neurocytoma and imaging findings of progressive disease. Functional MRI assessment of the motor strips is requested for presurgical planning. It should be noted that the margins of the patient's midline cingulate region tumor show evidence of hemosiderin staining as do several of the adjacent cerebral sulci. The resultant magnetic susceptibility is not believed to affect the quality of the functional data.Sensorimotor cortical activation of the hand, foot and face maps as expected along the pre- and post-central gyri. In particular, motor activation of the foot resides posterior and superior to the upper margin of the tumor. Language SMA activation as revealed by the verb generation paradigm resides within the superior frontal gyrus directly above but removed from the tumor.
Successful functional MRI for sensorimotor cortical mapping. Motor activation of the foot maps posterior and superior to the patient's midline tumor. Language SMA activity is also seen directly superior to the tumor.