Results 191 to 200 of about 19,379 (224)
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Posterior semicircular canal dehiscence in asymptomatic ears
Acta Oto-Laryngologica, 2010This study revealed that, in the adult population, the final diagnosis of this entity can only be made by combining imaging with clinical tests.We developed the largest temporal bone multislice computed tomography (CT) scan study so far by including 410 cases to investigate the prevalence of posterior semicircular canal dehiscence in patients with ...
Nezahat, Erdogan +6 more
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Cupulolithiasis of the posterior semicircular canal
American Journal of Otolaryngology, 2013We sometimes experience patients with persistent torsional/vertical (upbeating) positional nystagmus in the head-hanging position. We have been convinced of the existence of cupulolithiasis of the posterior semicircular canal because such cases reveal persistent torsional/vertical (downbeating) positional nystagmus in the nose-down position.In order to
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Posterior semicircular canal cupulolithiasis during acute pontomedullary demyelination
Practical Neurology, 2023Positional vertigo poses a diagnostic challenge in people with multiple sclerosis (MS). The characteristics of positional nystagmus and its response to repositioning manoeuvres are usually sufficient to diagnose benign paroxysmal positional vertigo (BPPV).
Sara Matos +6 more
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Analysis of 30 patients with cupulolithiasis of the posterior semicircular canal
European Archives of Oto-Rhino-Laryngology, 2022The diagnostic characteristics of patients with cupulolithiasis of the posterior semicircular canal are persistent torsional nystagmus in the supine position and persistent torsional nystagmus (opposite direction) in the nose-down position, which are caused by the affected canal becoming gravity sensitive.To investigate the clinical features of ...
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Posterior semicircular canal occlusion in the normal hearing ear
Otolaryngology–Head and Neck Surgery, 1991This report outlines our experience with posterior semicircular canal occlusion, a new operative procedure for intractable benign paroxysmal positional vertigo (BPPV). We postulate that the resulting solid canal “plug” prevents endolymph movement within the posterior canal, which effectively fixes the cupula.
L S, Parnes, J A, McClure
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A third window of the posterior semicircular canal: An animal model
The Laryngoscope, 2010AbstractObjectives/Hypothesis:A third window in the vestibular apparatus has been investigated in both animals and humans, specifically in superior semicircular canal dehiscence. There are as yet no animal model studies of the effect of a third vestibular window of the posterior semicircular canal.Study Design:Original basic research study.Methods:A ...
Ben I, Nageris +4 more
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Posterior semicircular canal dehiscence secondary to jugular enlargement
American Journal of Otolaryngology, 2016Semicircular canal dehiscence is an important entity often presenting with symptoms of noise or pressure induced vertigo, autophony, aural fullness and conductive hearing loss. Due to its varied presentation and mimic of other otologic conditions its consideration is of increased importance. Within we report a case of right sided posterior semicircular
Christopher A, Schutt, John F, Kveton
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Enhanced Retrosigmoid Exposure with Posterior Semicircular Canal Resection
Otolaryngology–Head and Neck Surgery, 1996A subset of patients with acoustic neuromas and useful hearing have tumors that are inadequately approached by both middle fossa and retrosigmoid techniques. The enhanced retrosigmoid technique combines the hearing preservation of posterior semicircular canal ablation to achieve lateral internal auditory canal exposure with the ample cerebellopontine ...
M, Arriaga, M, Gorum
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Posterior Semicircular Canal Dehiscence: Case Series and Systematic Review
Otology & Neurotology, 2020Objective:To conduct a systematic review of posterior semicircular canal dehiscence (PSCD) and to present a series of patients with PSCD with and without classic third-window symptoms.Data Sources:PubMed, Scopus, and the Cochrane Library from inception until April 2019.
Joshua A, Lee +5 more
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Posterior semicircular canal nystagmus is conjugate and its axis is parallel to that of the canal
Neurology, 2000A patient with a postoperative fistula of the left posterior semicircular canal is presented. Negative pressure in the external ear canal produced upbeat-torsional nystagmus, which was recorded in three dimensions using binocular scleral search coils. The nystagmus was conjugate, without skew deviation, and its trajectory corresponded to the anatomic ...
P D, Cremer +6 more
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