Hemichorea due to ipsilateral thalamic infarction: A case report

Figure 1 Magnetic resonance imaging and magnetic resonance angiography of the brain. A-C: Diffusion-weighted imaging showing cerebral infarction (orange arrows). A: Infarction in the left cerebral peduncle zone; B: Infarction in the junctional region of the left dorsal thalamus and cerebral peduncle; C: Infarction in the left dorsal thalamus; D: Magnetic resonance angiography showing severe stenosis of the P1 segment of the left posterior cerebral artery (orange arrow).

Figure 2 Extrapyramidal system. The descending fibers of the extrapyramidal system continue their ipsilateral course; the thalamus is a relay station, exerting control over bilateral motor function.