Ischemic chiasmal syndrome associated with posterior communicating artery (PCoA) and tuberothalamic artery (TA) infarction: a case report

Neurol Sci. 2021 Mar;42(3):1227-1230. doi: 10.1007/s10072-020-04906-4. Epub 2020 Nov 17.


Lesions affecting the body of the optic chiasm typically produce bitemporal hemianopia. The blood supply comes from the anterior communicating artery, anterior cerebral, posterior communicating, posterior cerebral, and basilar arteries. We herein report a young patient admitted to the emergency department with acute confusion, left-sided hemiparesis, hemihypoesthesia, and dysarthria. Bitemporal hemianopia was detected after resolution of confusion. On cranial magnetic resonance imaging (MRI), infarction in the right anterolateral thalamus in the territory of tuberothalamic artery (TA) and in posterior chiasma in the territory of the posterior communicating artery (PCoA) was revealed. Cerebral MR angiography showed luminal irregularity of the PCoA. The patient was presented to draw attention to the rare entity ischemic chiasmal syndrome.

Keywords: Ischemic chiasmal syndrome; Posterior communicating artery; Tuberothalamic artery.

Publication types

  • Case Reports

MeSH terms

  • Basilar Artery*
  • Cerebral Angiography
  • Cerebral Infarction
  • Circle of Willis*
  • Humans
  • Magnetic Resonance Imaging