Article

We report on a patient with a meningioma whose hand motor function appeared to be
reorganized mainly into the face somatotopy of the primary motor cortex (M1)
following meningioma removal, using functional RMI (fMRI). A 76-year-old
right-handed woman showed leukomalactic lesions in the left fronto-parietal lobes
and subcortical white matter, including the upper portion of the precentral knob
after meningioma removal. She recovered motor function to the point that she was
able to extend the affected fingers against gravity at 6 weeks and extend the
affected fingers against resistance at 12 weeks. The right primary sensori-motor
cortex centered on the precentral knob was activated during movement of the
unaffected (left) hand. By contrast, the face somatotopy and inferior portion of
the precentral knob of the left primary motor cortex were activated during
movement of the right hand. Peak activations were present at the left face
somatotopy of the primary motor cortex during movement of the right hand and the
right precentral knob during movement of the left hand. Motor function of the
affected hand appeared to be reorganized mainly into the face somatotopy of the
primary motor cortex and partially into the lower portion of the precentral knob
after meningioma removal.

Langue : ANGLAIS