Rare Lesions of the Internal Auditory Canal

Watanabe, Kentaro; Cobb, Mary In-Ping Huang; Zomorodi, Ali R.; Cunningham, Calhoun D.; Nonaka, Yoichi; Satoh, Shunsuke; Friedman, Allan H.; Fukushima, Takanori

doi:10.1016/j.wneu.2016.12.003

Cited by 15 publications

(16 citation statements)

References 35 publications

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“…In comparison to the literature, this study includes a significantly elevated number of patients with compromised hearing (86% vs. 52% patients, P = .0001, Fisher exact test) and anacusis (32.1% vs. 10%, P = .0064, Fisher exact test) 6–8,11–36 . The other symptoms had a similar prevalence to the literature.…”

Section: Discussionmentioning

confidence: 85%

“…Interestingly, all patients with preoperative facial palsy were meningothelial or angiomatous meningiomas, as were all cases with infiltrated facial and cochlear nerves. The prevalence of the different histopathologies in literature (when described) resulted in meningothelial meningioma in 76% of the cases and psammomatous in 19% 6,8,12,16,21,24,27,30,32,35 . Rare cases of transitional meningioma have also been published 16,24…”

Section: Resultsmentioning

confidence: 99%

“…The prevalence of the different histopathologies in literature (when described) resulted in meningothelial meningioma in 76% of the cases and psammomatous in 19%. 6,8,12,16,21,24,27,30,32,35 Rare cases of transitional meningioma have also been published. 16,24 Follow-up had an average duration of 42 months (range 1-209 months).…”

Section: Resultsmentioning

confidence: 99%

“…There have been less than 50 cases of pure ICMs described in literature and nearly 100 IAC meningiomas extending partly in the CPA (largest series are collected in Table I). 6–8,11–36 …”

Section: Introductionmentioning

confidence: 99%

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Meningiomas of the Internal Auditory Canal

Sykopetrites¹,

Piras²,

Taibah³

et al. 2020

The Laryngoscope

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Objective Identify and define specific preoperative and postoperative characteristics of intracanalicular meningiomas (ICMs) in order to improve their diagnosis and management, and to differentiate them from intrameatal vestibular schwannomas (IMVSs). Methods Preoperative symptomatology, magnetic resonance imaging (MRI), and postoperative outcomes of 28 ICMs were analyzed. The results were compared to the literature and IMVSs treated by our group. Results Anacusis and progressive hearing loss were more frequent in the present population than the cases reviewed (P = .0064 and P = .0001, respectively). Hearing loss affected more than 90% of the patients, with anacusis in 32.1% of the cases. Facial palsy affected 17.9% of the patients. In comparison to IMVSs, preoperative anacusis was more associated to meningiomas (P = .0037), and the facial nerve was more compromised in ICMs than IMVSs, both preoperatively (P = .0011) and at follow‐up (P < .0001). According to a re‐evaluation of preoperative MRIs and comparison with IMVSs, linear tumor borders, and linear morphology along the internal auditory canal wall, but not the presence of a dural tail, were significantly more present in ICMs (P = .0035, P = .0004, P = .1963, respectively). These characteristics could have led to a correct preoperative diagnosis in 61% of our cases. Conclusion Contrariwise to IMVSs, the frequent preoperative anacusis and facial palsy demonstrate the more aggressive nature of ICMs, which also carry a higher risk of postoperative facial palsy and difficulty to preserve hearing. An attentive evaluation of imaging should ease diagnosis, and asymptomatic or stable ICMs should be enrolled in a wait‐and‐scan protocol. Level of Evidence 4 Laryngoscope, 131:E413–E419, 2021

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Section: Discussionmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Meningiomas of the Internal Auditory Canal

Sykopetrites¹,

Piras²,

Taibah³

et al. 2020

The Laryngoscope

View full text Add to dashboard Cite

show abstract

“…1 Most tumors in these locations are vestibular schwannomas (80%-90%), followed by meningiomas. 1 The remaining 10% of CPA and IAC lesions include many benign and malignant masses. 2 As the standard treatment for vestibular schwannomas is surgical excision, it is important to distinguish indolent masses from the more common schwannomas to identify lesions that can be observed without excision.…”

mentioning

confidence: 99%