FMRI

History
A patient present with blurring vision and unsteadiness.

Findings
A solitary mixed signal intensity lesion is seen in the anterior left frontal lobe. The lesion is surrounded by a ring of haemosiderin and is likely to represent a cavernoma with a recent haemorrhage. The fMRI demonstrates that the areas of primary right hand, foot and lip activation are very close to the cavernoma as are the supplementary motor areas activated by the right hand and foot.