Osteoma of the internal auditory canal

Liétin, B.; Bascoul, A.; Gabrillargues, Jean; Crestani, Sandra; Avan, Paul; Mom, T.; Gilain, L.

doi:10.1016/j.anorl.2010.02.004

Cited by 17 publications

(26 citation statements)

References 4 publications

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“…Three out of 17 cases of osteoma and 3 out of 4 cases of exostoses were bilateral in nature (Table 2) [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Symptomatic patients presented at average age of 50 with an average symptom duration of 6.4 years.…”

Section: Discussionmentioning

confidence: 99%

Bilateral osteomas and exostoses of the internal auditory canal

Schutt

Guo

Bagwell

et al. 2015

American Journal of Otolaryngology

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Section: Discussionmentioning

confidence: 99%

Bilateral osteomas and exostoses of the internal auditory canal

Schutt

Guo

Bagwell

et al. 2015

American Journal of Otolaryngology

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“…A previous review of 13 cases of IAC osteoma reported from 1882 to 1993 identified several clinical characteristics as follows: mean age of 57 years; female-to-male ratio of 5.5:1, suggesting a particular predilection for postmenopausal women; and 42% of the patients had no symptoms, 42% had hearing loss, 25% had tinnitus, and 33% had vertigo (Clerico et al 1994). Our present study summarized and reviewed 17 cases of IAC osteoma reported in the past 22 years (1992-2013) (Singh et al 1992;Ramsay and Brackmann 1994;Coakley et al 1996;Wright et al 1996;Boedts et al 1997;Davis et al 2000;Vrabec et al 2000;Kovacić et al 2001;Gerganov et al 2008;Liétin et al 2010;Baik et al 2011;Kaymakci et al 2012;Plantone et al 2013) and excluded the previously reviewed cases by Clerico et al (1994) (Table 1). Mean age was 44.1 years (male: 44.0, female: 44.2), and femaleto-male ratio was 1.4:1.…”

Section: Discussionmentioning

confidence: 99%

“…Osteomas of the IAC are very rare and usually asymptomatic (Ramsay and Brackmann 1994;Liétin et al 2010;Baik et al 2011); thus, the clinical and pathological characteristics are not fully understood. A previous review of 13 cases of IAC osteoma reported from 1882 to 1993 identified several clinical characteristics as follows: mean age of 57 years; female-to-male ratio of 5.5:1, suggesting a particular predilection for postmenopausal women; and 42% of the patients had no symptoms, 42% had hearing loss, 25% had tinnitus, and 33% had vertigo (Clerico et al 1994).…”

Section: Discussionmentioning

confidence: 99%

“…However, osteoma of the internal auditory canal (IAC) is very rare (Ramsay and Brackmann 1994;Baik et al 2011), and is usually discovered incidentally because the tumor remains asymptomatic (Liétin et al 2010). Computed tomography (CT) is the most effective diagnostic modality that can reveal apparent dense bony lesion that is sometimes missed by magnetic resonance (MR) imaging (Davis et al 2000).…”

Section: Introductionmentioning

confidence: 99%

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Osteoma of the Internal Auditory Canal Mimicking Vestibular Schwannoma: Case Report and Review of 17 Recent Cases

Suzuki

Takata

Miyazaki

et al. 2014

Tohoku J. Exp. Med.

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Osteoma of the internal auditory canal (IAC) is an uncommon benign bone tumor. Its imaging features may be similar to other IAC lesions, such as vestibular schwannomas that are benign and usually slow-growing but sometimes life-threatening tumors. Thus, detecting IAC lesions and differentiating osteoma from other IAC lesions are both important clinically. We report a case of misdiagnosis of an IAC osteoma as an IAC schwannoma based on magnetic resonance (MR) imaging using the three-dimensional constructive interference in steady state (CISS) sequence instead of T1-weighted MR imaging with gadolinium. We also review 17 cases of IAC osteomas reported in the past 22 years. A 61-year-old female was admitted to our department with IAC lesion incidentally discovered by the CISS sequence. The lesion was diagnosed as an IAC schwannoma, and was followed up annually under "wait and scan" management. Follow-up T1-weighted MR imaging with gadolinium showed no enhancement of the tumor, and additional computed tomography (CT) of the temporal bone showed a solitary pedunculated bony lesion, resulting in the diagnosis of IAC osteoma. The CISS sequence is useful for detecting small IAC lesions, such as vestibular schwannomas. However, the CISS sequence has limitations for qualitative diagnosis and can misdiagnose osteomas as schwannomas. Use of the CISS sequence without T1-weighted MR imaging with gadolinium for the screening of a lesion of the IAC and cerebellopontine angle should consider the possibility of IAC osteomas, and temporal bone CT or T1-weighted MR imaging with gadolinium should be performed when an IAC lesion is detected.

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“…Trauma, inflammation, embryological errors, and hormonal dysregulation have all been implicated as possible contributors. 1,3,11 It's been proposed that trauma during puberty may lead to aberrant bone overgrowth giving rise to an osteoma. 3 Frequent ear infections with repeated and chronic inflammation, or abnormal ossification of cranial and skull base sutures during embryological development, have also been implicated.…”

Section: Pathophysiologymentioning

confidence: 99%

Internal Acoustic Canal Stenosis Due to Hyperostosis

Goodarzi

Toussi

Garza

et al. 2019

J Neurol Surg B Skull Base

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Background Exostoses and osteomas are benign, insidious lesions of the bone involving the internal acoustic canal (IAC). We present two cases of IAC exostoses managed with surgical decompression and review the clinical outcomes of previously reported cases in the literature. Methods A comprehensive search was conducted using PubMed Central, Web of Science Core Collection, and Google Scholar databases to identify previous reports of IAC exostoses and osteomas. A total of 26 reported cases were identified, and patient presenting symptoms, management strategies, and response to surgery was obtained when available. Results Of the 13 patients who underwent surgical decompression, 8 patients had resolution of vertigo symptoms, 10 patients had improvement of tinnitus symptoms, and all patients maintained some level of serviceable hearing. Conclusion IAC exostoses and osteomas are rare lesions that lead to insidious onset of debilitating symptoms from vestibulocochlear nerve dysfunction. Although the role of surgical decompression remains unclear, it appears that patients presenting with vertigo have more favorable response to surgical decompression as compared with those presenting with tinnitus and sensorineural hearing loss.

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Osteoma of the internal auditory canal

Abstract: Osteomas are diagnosed incidentally in asymptomatic patients. Our case was symptomatic and raised the question of surgical management. This article discusses the presentation and management associated with this exceptional osteoma location.

Cited by 17 publications

References 4 publications

Bilateral osteomas and exostoses of the internal auditory canal

Bilateral osteomas and exostoses of the internal auditory canal

Osteoma of the Internal Auditory Canal Mimicking Vestibular Schwannoma: Case Report and Review of 17 Recent Cases

Internal Acoustic Canal Stenosis Due to Hyperostosis

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