Neurovascular conflict in the CPA cistern
Right tinnitus, non-directional vertigo.
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A vascular coil originating from the anterior inferior cerebellar artery (AICA) can be seen indenting the cranial nerves entering the right internal auditory canal.
AICA loops in the cerebello-pontine cistern have been accused of causing auditory and vestibular symptoms 1, as well as hemifacial spasm 2 resulting from compression of the VII and VIII cranial nerves.
- 1. Mcdermott AL, Dutt SN, Irving RM et-al. Anterior inferior cerebellar artery syndrome: fact or fiction. Clin Otolaryngol Allied Sci. 2003;28 (2): 75-80. - Pubmed citation
- 2. Girard N, Poncet M, Caces F et-al. Three-dimensional MRI of hemifacial spasm with surgical correlation. Neuroradiology. 1997;39 (1): 46-51. Neuroradiology (link) - Pubmed citation