Right postcommunicating part of posterior cerebral artery (P2 segment) (Pars postcommunicans arteriae cerebri posterioris)
Educational content only — not medical advice.
Anatomy
The P2 segment of the posterior cerebral artery extending from the posterior communicating junction, encircling the midbrain within the ambient cistern.
Clinical notes
Gives origin to thalamoperforating and posterior choroidal branches; occlusion causes Dejerine-Roussy thalamic pain syndrome and homonymous hemianopia.
Related structures
Educational references
FAQ
What is the role of the Right postcommunicating part of posterior cerebral artery (P2 segment)?
The P2 segment of the posterior cerebral artery extending from the posterior communicating junction, encircling the midbrain within the ambient cistern.
Why is the Right postcommunicating part of posterior cerebral artery (P2 segment) clinically important?
Gives origin to thalamoperforating and posterior choroidal branches; occlusion causes Dejerine-Roussy thalamic pain syndrome and homonymous hemianopia.
Source & license
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