[The basilar artery terminal branch syndrome. Paramedian meso-thalamic infarct]

The author describes two cases of paramedian mesothalamic infarction as part of multiple infarctions in occlusions of the top of the basilar and peduncular segment of the posterior cerebral artery. Based on published work and the author's own observations, the clinical syndrome of this infarction was defined and comprises five symptoms: impaired consciousness, amnestic syndrome and paralysis of vertical views due damage of formations in the area of paramedian thalamo-subthalamic (thalamoperforate) arteries by neuropsychic abnormalities and contralateral hemidefects due to damage of structures in the neighbouring thalamic and parathalamic areas.