[Left temporal meningioma disclosed by ipsilateral hemiplegia].

A 46 year-old woman presented with a weakness of the left side. MRI of the brain showed a left temporal meningioma, a left temporal lobe herniation and two high-signals in the right cerebral peduncle. The involvement of the pyramidal tract in the foot of the cerebral peduncle, in this case, results from temporal lobe hemiation. These findings are different from the mechanisms reported in other cases of ipsilateral hemiplegia. The ipsilateral hemiplegia syndrome was classically described by Ectors in relation to a meningioma of the foot of the third frontal circonvolution. Pathophysiological theories of ipsilateral hemiplegia are reviewed.