[Cerebral infarction in the area of the anterior choroidal artery with oculomotor disorder].

A 84-year-old diabetic man had a complete right-sided hemiplegia with ipsilateral hypoesthesia and vertical diplopia, but no aphasia or hemianopia. The CT scan showed a low-density area in the posterior limb of the left internal capsule, in the territory of the anterior choroidal artery. The mechanism of diplopia is discussed and is attributed to the involvement of the mesencephalic territory of the anterior choroidal artery.