Скачать или смотреть Mirror Movements Following Brain Tumor Resection

A man in his late 40s presented with new difficulty holding objects in his left hand while performing bimanual tasks a year following resection of a right frontoparietal oligoastrocytoma adjacent to the primary motor cortex that controls left-hand movement. On exam the patient was asked to voluntarily move his right index finger, little finger, and middle finger sequentially. This video shows identical involuntary left-hand movements that were observed accompanying his voluntary right-hand movements. MRI revealed scar formation or residual infiltrative tumor adjacent to the resection cavity and extending into the corona radiata and corpus callosum. Execution of complex unilateral movements requires restriction of motor output to the primary motor cortex (M1) contralateral to the intended movement. This complex network can be impaired by direct destruction of these inhibitory tracts, which was presumed to cause the mirror movement in this patient as a result of his tumor resection. For more images and full case details, see http://ja.ma/2spc4lZ