Anterior inferior cerebellar artery
|Anterior inferior cerebellar artery|
Diagram of the arterial circulation at the base of the brain (anterior inferior cerebellar artery labeled at lower right)
|Latin||Arteria cerebelli inferior anterior|
|Inferior cerebellar veins|
It arises from the basilar artery at the level of the junction between the medulla oblongata and the pons in the brainstem. It passes backward to be distributed to the anterior part of the undersurface of the cerebellum, anastomosing with the posterior inferior cerebellar branch of the vertebral artery. It supplies the anterior inferior quarter of the cerebellum.
Occlusion of AICA results in lateral pontine syndrome, also known as AICA syndrome. The symptoms include sudden onset vertigo and vomiting, nystagmus, falling to the side of the lesion (due to damage to vestibular nuclei), ipsilateral loss of sensation of the face (due to damage to principal sensory trigeminal nucleus), ipsilateral facial paralysis (due to damage to the facial nucleus) and ipsilateral hearing loss and tinnitus (due to damage to the cochlear nuclei).
- Anatomy photo:28:09-0224 at the SUNY Downstate Medical Center
- anterior+inferior+cerebellar+artery at eMedicine Dictionary
- Anatomy diagram: 13048.000-1 at Roche Lexicon - illustrated navigator, Elsevier
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