Splenial artery

Last revised by Assoc Prof Frank Gaillard on 25 Nov 2022

The splenial artery (or posterior pericallosal artery) arises most commonly from the parieto-occipital branch of the posterior cerebral artery. It represents an important potential collateral supply from the posterior to anterior cerebral arteries via the pericallosal artery. When a sizable direct anastomosis is present, it is referred to as a persistent limbic arch 4.

Variant anatomy

The splenial artery usually arises from the posterior parieto-occipital branch of the posterior cerebral artery (60% of cases). In a minority of cases, it arises from other regional arteries including 1-3:

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