OBJECTIVES/HYPOTHESIS: To study the differential diagnosis of @entity2704 ( @entity2704 ) and @entity66 ( @entity601 ) by using magnetic resonance imaging (MRI) of intratympanic @entity2287 . STUDY DESIGN: Prospective cohort study. METHODS: Definite @entity601 @entity1 (n = 30) and definite or probable @entity2704 @entity1 (n = 30) were included, and the two groups were age and sex matched. Three-dimensional real inversion recovery (3D-real-IR) MRI was performed 24 hours after bilateral intratympanic @entity2287 to assess the presence and degree of @entity5570 ( @entity5570 ). Response rates, amplitudes, latency, and response threshold of cervical and ocular vestibular evoked myogenic potentials (c/oVEMPs) were tested by using air-conducted sound. Pure tone audiometry was used to evaluate the level of @entity393 . RESULTS: Different degrees of @entity5570 were observed in the cochlea and vestibule in the affected ears of @entity601 @entity1 , but only suspicious cochlear hydrops and no vestibular hydrops was noted in the @entity2704 @entity1 . The correlation between the degree of @entity5570 and low-frequency @entity393 was statistically significant. Only the response threshold for c/oVEMP differentiated the @entity601 -affected side from @entity2704 . The latency and amplitude for c/oVEMP showed no significant difference between groups. CONCLUSIONS: Characteristic pathological changes of @entity601 include @entity5570 in the inner ear, and 3D-real-IR MRI helps differentiate @entity2704 from @entity601 . @entity2704 and @entity601 behaved similarly in @entity394 and their transduction pathway, but @entity601 appeared to be more severe than @entity2704 . An association in their pathophysiology may play a part in these responses. LEVEL OF EVIDENCE: 4 Laryngoscope, 2017.

Magnetic resonance imaging of intratympanic @entity2287 helps differentiate XXXX from @entity66 .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity5570 :: ('MESH:D018159', 'Disease') :: ['EH', 'endolymphatic hydrops'] @entity66 :: ('MESH:D004194', 'Disease') :: ['M  ni  re disease'] @entity394 :: ('MESH:D015837', 'Disease') :: ['vestibular dysfunction'] @entity2704 :: ('MESH:D008881', 'Disease') :: ['VM', 'vestibular migraine'] @entity601 :: ('MESH:D009436', 'Disease') :: ['MD'] @entity393 :: ('MESH:D034381', 'Disease') :: ['hearing loss'] @entity2287 :: ('MESH:D005682', 'Chemical') :: ['gadolinium']
@entity2704 :: (MESH:D008881,Disease) :: ['vestibular migraine']
