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C-2019 - Third Cranial Nerve Palsy - Clinical and Radiological Features
M. Vouk, M. Vrabec; Ljubljana/SI
Type: Educational Exhibit
Area of Interests: CNS, Eyes, Head and neck
Imaging Techniques: CT-Angiography, MR-Diffusion/Perfusion, MR
Procedure: Education
Special Focus: Ischaemia / Infarction

Learning objectives:
The purpose of this poster is to describe: the anatomy of the third cranial - oculomotor nerve (CNIII) clinical signs and symptoms of CNIII palsy, imaging modalities and characteristic findings in patients with this clinical presentation, and underline the importance of adequate clinical data w[...]
Background:
Anatomy and pathology by segments of the CNIII CNIII or the oculomotor nerve has two components - somatic component contains motor nerve fibers that control most of the extra ocular muscles (inferior, superior, medial rectus, inferior oblique and the levator palpebrae superioris muscle). Visceral [...]
Findings and procedure details:
Clinical syndromes CNII palsy can be either isolated, that is, only the function of CNIII is affected, or nonisolated – there are additional clinical signs and symptoms present. Especially in case of isolated CNIII palsy, a distinction between partial and complete nerve involvement should be made.[...]
Conclusion:
Detailed clinical background combined with the understanding of different patterns of signs and symptoms and knowledge of site specific pathology enables the radiologist to make a precise imaging diagnosis.
Personal information:
References:
Bruce BB, Biousse V, Newman NJ (2007) Third nerve palsies. Semin Neurol 27:257-268 Casselman J, Mermuys K, Delanote J, Ghekiere J, Coenegrachts K (2008) MRI of the cranial nerves--more than meets the eye: technical considerations and advanced anatomy. Neuroimaging Clin N Am 18:197-231, preceding x C[...]

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