Computed tomographic characteristics of pneumolabyrinth in a French bulldog with otitis media and externa

Belmudes, Audrey; Couturier, Jérôme; Gory, Guillaume; Cauvin, Eddy R.J.; Condamin, G.; Rabillard, M.; Rault, Delphine

doi:10.1111/vru.12578

Cited by 2 publications

(1 citation statement)

References 8 publications

(31 reference statements)

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“…The authors felt, nonetheless, that changes in the middle ear could not be discarded as a possible cause for the signs, but it is possible that this will be a source of bias. Lastly, all imaging investigations relied on MRI and it can be argued that this modality may not be sensitive in the assessment of certain structures such as the inner ear, so the use of Computed Tomography may have been beneficial in some cases [34].…”

Section: Discussionmentioning

confidence: 99%

Clinical signs, MRI findings and outcome in dogs with peripheral vestibular disease: a retrospective study

et al. 2020

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Background: Vestibular dysfunction is relatively common in dogs, with a prevalence of 0.08% reported in primary veterinary care in the UK. There are several studies investigating how to differentiate between peripheral and central vestibular disease but only limited information regarding the possible underlying causes for peripheral vestibular dysfunction in dogs. This study therefore aimed to describe the clinical signs, magnetic resonance imaging findings (MRI), underlying causes and outcome in a large population of dogs diagnosed with peripheral vestibular disease. Results: One hundred eighty-eight patients were included in the study with a median age of 6.9 years (range 3 months to 14.6 years). Neurological abnormalities included head tilt (n = 185), ataxia (n = 123), facial paralysis (n = 103), nystagmus (n = 97), positional strabismus (n = 93) and Horner syndrome (n = 7). The most prevalent diagnosis was idiopathic vestibular disease (n = 128), followed by otitis media and/or interna (n = 49), hypothyroidism (n = 7), suspected congenital vestibular disease (n = 2), neoplasia (n = 1) and cholesteatoma (n = 1). Long-term follow-up revealed persistence of head tilt (n = 50), facial paresis (n = 41) and ataxia (n = 6) in some cases. Recurrence of clinical signs was observed in 26 dogs. Increasing age was associated with a mild increased chance of diagnosis of idiopathic vestibular syndrome rather than otitis media and/or interna (P = 0.022, OR = 0.866; CI 0.765-0.980). History of previous vestibular episodes (P = 0.017, OR = 3.533; CI 1.251-9.981) was associated with an increased likelihood of resolution of the clinical signs whilst contrast enhancement of cranial nerves VII and/or VIII on MRI (P = 0.018, OR = 0.432; CI 0.251-0.868) was associated with a decreased chance of resolution of the clinical signs. Conclusions: Idiopathic vestibular disease is the most common cause of peripheral vestibular dysfunction in dogs and it is associated with advanced age. Incomplete recovery from peripheral vestibular disease is common, especially in dogs presenting with cranial nerve enhancement on MRI but less so if there is previous history of vestibular episodes.

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Section: Discussionmentioning

confidence: 99%

Clinical signs, MRI findings and outcome in dogs with peripheral vestibular disease: a retrospective study

et al. 2020

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Clinical Phenotypic Variability and Significance of Pneumolabyrinth After Tympanum-Penetrating Injury

Cai

et al. 2022

Ear Nose Throat J

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Objectives This study aimed to investigate the clinical manifestations, treatment, and prognosis of traumatic pneumolabyrinth caused by tympanic membrane (TM) perforation. Methods Clinical data were collected from 3 cases of traumatic pneumolabyrinth occurring between 2015 and 2021 and 22 cases were identified from 20 articles in PubMed database that reported pneumolabyrinth due to tympanum-penetrating injury. Intervention Nonoperative treatment was performed in Cases 1 and 3. Middle ear inspection was performed 1 year after the injury due to worsening vertigo upon head movement in Case 2. Main outcome measures Hearing outcomes and vestibular evaluations were presented for the 3 cases, and all comparable cases in the literature were reviewed. Results All 25 patients had a history of traumatic TM perforation, with perforations mostly located in the posterior or posterior superior quadrant (16 cases). Air signs were observed in the vestibule in all 25 patients, 15 of whom revealed stapes luxation into the vestibule. Conservative treatments were performed in 8 cases, and exploratory surgery in 17 cases. Most patients were free of vertigo (23/25). There were no significant hearing improvements in 15 cases, while hearing recovery or improvement was observed in 9 cases. Conclusions The clinical manifestations of pneumolabyrinth due to tympanum-penetrating injuries vary widely. Importantly, the degree of hearing loss is not directly related to the subjectively perceived vertigo but to the location and extent of pneumolabyrinth.

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Computed tomographic characteristics of pneumolabyrinth in a French bulldog with otitis media and externa

Cited by 2 publications

References 8 publications

Clinical signs, MRI findings and outcome in dogs with peripheral vestibular disease: a retrospective study

Clinical signs, MRI findings and outcome in dogs with peripheral vestibular disease: a retrospective study

Clinical Phenotypic Variability and Significance of Pneumolabyrinth After Tympanum-Penetrating Injury

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