[Hemiparesis with lingual involvement. Hematoma of the genu of the internal capsule].

A 62 year-old hypertensive patient with a small left lenticulo-capsular hematoma presented with a right facio-brachial hemiparesis, dysarthria, and a right lingual paresis. The hematoma was limited to the genu and the anterior part of the posterior limb of the internal capsule. The occurrence of this incomplete pseudo-opercular syndrome in relation to a capsular lesion provides evidence for a cortico-hypoglossal projection with predominantly crossed fibers. The situation of the pyramidal tract in the internal capsule is considered.