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Inferior peduncle lesion presenting with bilaterally impaired vestibular responses to horizontal and posterior head impulses
Author(s) -
Zuma e Maia Francisco,
Luis Leonel
Publication year - 2015
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1002/lary.25306
Subject(s) - lesion , vestibular system , cerebral peduncle , anatomy , medicine , reflex , magnetic resonance imaging , peripheral , vestibulo–ocular reflex , audiology , radiology , surgery , internal capsule , white matter
Differentiating central from peripheral origins of vestibulo‐ocular reflex (VOR) lesions can be challenging. A 36‐year old man presented with a 1‐year history of progressive unsteadiness. The video‐Head Impulse Test revealed a significantly reduced VOR gain in both horizontal and posterior canals (0.49 ± 0.05 and 0.38 ± 0.06) but normal VOR responses in both anterior canals (0.89 ± 0.08 and 1.04 ± 0.15). No plausible combination of end‐organ lesion should be responsible for these observations. A brain magnetic resonance imaging disclosed a left inferior cerebellar peduncle lesion suggestive of a glioma. Laryngoscope , 125:2386–2387, 2015