Medial posterior choroidal artery

• Aneurysms Associated with Hyperplastic Anterior Choroidal Arteries: Three Cases with Literature Review
• Vascular supply of the eye: clinical anatomy
• Ruptured aneurysm of the medial posterior choroidal artery in the pineal region: A rare location easily missed
• Accessory posterior cerebral artery as a duplicate anterior choroidal artery
• Damage to the Contralateral Thalamus after Magnetic Resonance Imaging-guided, Focused Ultrasound Surgery for Essential Tremor: A Case Report
• The Transorbital Approach to the Internal Carotid and Middle Cerebral Arteries. A Dissection Study Toward Targeted Access Aneurysm Clipping
• [¹¹C]Metoclopramide PET can detect a seizure-induced up-regulation of cerebral P-glycoprotein in epilepsy patients
• Microsurgical Anatomy of the Lateral Posterior Choroidal Artery and Its Thalamic Branches

The medial posterior choroidal artery is a small branch (often multiple - 40% of hemispheres) usually arising from the P2 segment of the posterior cerebral artery (PCA). It may also arise from one of the PCA branches, e.g. parieto-occiptal, calcarine, splenial artery.

It ascends deep to the rest of the PCA and supplies small branches to the tegmentum, midbrain, posterior thalamus and pineal gland as the cisternal segment. It then penetrates the velum interpositum, becoming the plexal segment. It then runs in the roof of the third ventricle supplying the ipsilateral choroid plexus. As it reaches the foramen of Monro it passes through it to anastamose with branches of the lateral posterior choroidal artery.

• Aneurysms Associated with Hyperplastic Anterior Choroidal Arteries: Three Cases with Literature Review
• Ruptured aneurysm of the medial posterior choroidal artery in the pineal region: A rare location easily missed
• The Transorbital Approach to the Internal Carotid and Middle Cerebral Arteries. A Dissection Study Toward Targeted Access Aneurysm Clipping
• Microsurgical Anatomy of the Lateral Posterior Choroidal Artery and Its Thalamic Branches
• Vein of Galen Aneurysmal Malformation: A Case Report and Literature Review
• Coexistence of anterior choroidal artery and posterior cerebral artery retia mirabilia presenting with subarachnoid hemorrhage: illustrative case
• Endovascular glue embolization of the medial posterior choroidal artery aneurysm: A case report and a literature review
• Bypass surgery for ruptured dissecting aneurysms of the proximal posterior cerebral artery: illustrative case

Aneurysms of the pineal region are rare and theoretically could arise from the medial posterior choroidal artery (MPChoA) or lateral posterior choroidal arteries (LPChoA). A 64-year-old lady with subarachnoid haemorrhage (SAH) and intraventricular haemorrhage (IVH) due to a ruptured MPChoA aneurysm was treated with microsurgical aneurysm excision via an occipital interhemispheric approach. This case demonstrates the importance of being mindful of rare aneurysm locations when initial vascular imaging in SAH appears normal ¹⁾