Extracanalicular Osteomas of the Temporal Bone

Denia, Antonio; Perez, Francisco; Canalis, Rinaldo R.; Graham, Malcolm D.

doi:10.1001/archotol.1979.00790240020005

Cited by 89 publications

(80 citation statements)

References 9 publications

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“…Osteomas of the EAC are considered benign tumors as they are non-invasive; however, they can cause significant symptoms due to mass effect and auditory canal obstruction [2][3][4].…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, epidemiologic data is lacking for osteoma of the EAC, in part due to its low incidence. Medical literature suggests the neoplasm effects a wide range of age groups starting in the second decade of life and there is inconclusive, as well as conflicting, data regarding gender partiality [2,4,8].…”

Section: Discussionmentioning

confidence: 99%

“…Symptoms are similar between osteomas and exostoses and can include vertigo, paroxysmal tinnitus, sensorineural hearing loss, trigeminal neuralgia, and pain [3,4]. There is a reported case of a cholesteatoma developing in conjunction with an osteoma of the external auditory canal, possibly secondary to impaired epithelial migration [2].…”

Section: Discussionmentioning

confidence: 99%

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External Auditory Osteoma

Carbone

Nelson

2011

Head and Neck Pathol

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External auditory canal (EAC) osteomas are rare, benign bony neoplasms that occur in wide range of patients. While chronic irritation and inflammation have been suggested as causal factors in several cases, significant data is lacking to support these suspicions. Symptoms are rare and can include hearing loss, vertigo, pain and tinnitus. Diagnosis is made based on a combination of clinical history and examination, radiographic imaging, and histopathology. Osteomas of the EAC are usually found incidentally and are unilateral and solitary. Computed tomography reveals a hyperdense, pedunculated mass arising from the tympanosquamous suture and lateral of the isthmus. Histopathologically, EAC osteomas are covered with periosteum and squamous epithelium, and consist of lamalleted bone surrounding fibrovascular channels with minimal osteocysts. Osteomas have historically been compared and contrasted with exostoses of the EAC. While they share similarities, more often than not it is possible to distinguish the two bony neoplasms based on clinical history and radiographic studies. Debate remains in the medical literature as to whether basic histopathology can distinguish osteomas of the EAC from exostoses. Surgical excision is the standard treatment for EAC osteomas, however close observation is considered acceptable in asymptomatic patients.Keywords Osteoma Á External auditory canal Á Exostosis Á Radiology Á Pathology HistoryA 28-year-old male was referred to the Otorhinolaryngology clinic for a left ear mass that was incidentally found during a routine audiology evaluation. The patient related that his primary care physician had first noticed the lesion 2 years prior. He denied a history of trauma to the ear or hearing loss, but stated recurrent left-sided otitis media as well as frequent cerumen impactions. Clinical examination revealed a hard, irregularly shaped mass of the left anterior auditory canal measuring approximately 2.0 mm. The mass and surrounding skin were normal in color and no surface ulcerations were noted. The right ear showed no abnormalities. The patient's health history was otherwise unremarkable and he denied participating, more than occasionally, in water sports. Radiographic FeaturesA non-contrast computerized tomographic (CT) scan of the skull base and temporal bones was obtained using 1 mm axial and coronal slices. The CT scan was remarkable for a non-obstructing, partially pedunuclated, hyperdense mass of the left anterior external auditory canal (Fig. 1). Review of the sections demonstrated the mass originated at the tympanosquamous suture (Fig. 2). The mass measured 1.0 cm by 0.6 cm, which was best appreciated on the axial images. The remainder of the structures of the middle and external ear were unremarkable, and the right ear showed no pathologic changes.

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“…Osteomas of the EAC are considered benign tumors as they are non-invasive; however, they can cause significant symptoms due to mass effect and auditory canal obstruction [2][3][4].…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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External Auditory Osteoma

Carbone

Nelson

2011

Head and Neck Pathol

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“…Excision or drilling of superficial lesions of the mastoid and squama is a simple procedure. At surgery, since the lesions are always limited to the external cortex a cleavage plane is always encountered when tumor meets normal bone [6]. In mastoid osteomas extending into the fallopian canal and bony labyrinth, complete excision is not indicated since there may be damage to these structures.…”

Section: Discussionmentioning

confidence: 99%

Osteoma of the Mastoid Bone - A Case Report

Das

Kashyap

2005

Medical Journal Armed Forces India

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“…11 Denia et al apresentaram 8 casos de osteoma, sendo a localização mais comum a mastóide. 12 Osteomas localizados no ouvido médio já foram relatados. 13,14 Em 1995, Miziara et al relataram um caso de osteoma localizado no conduto auditivo interno (CAI).…”

Section: Discussionunclassified

Osteoma de meato acústico externo: relato de nove casos e revisão de literatura

Testa

Pizarro

Vuono³

et al. 2003

Rev. Bras. Otorrinolaringol.

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Ost eoma de meato acústico externo corresponde a um crescimento ósseo anormal e benigno, que se desenvolve abaixo da pele do conduto e pode causar obstrução total ou parcial do meato acústico externo. The osteoma of external acoustic meatus corresponds to an abnormal and benign bony growth, that is developed under the skin of the auditory canal and that can cause total or partial obstruction of the external acoustic meatus. Study design: Serie study. Material and method: We reported in this study nine cases of osteoma of external acoustic meatus. The patients' ages varied between 23 and 70 years old, being the average age 40,6 years. These patients were 5 of the feminine sex and 4 were of the masculine sex. Results: The more common symptoms were hipoacusia, caused by the partial or total obstruction of the canal, appealing external otitis and also the accumulation of cerumen deep in the external auditory canal with difficult removal. Conclusion: We recommended in the presented cases surgical treatment, which had good evolution, with no recidivism.Palavras-chave: osteoma, meato, acústico, externo, hipoacusia.

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Extracanalicular Osteomas of the Temporal Bone

Cited by 89 publications

References 9 publications

External Auditory Osteoma

External Auditory Osteoma

Osteoma of the Mastoid Bone - A Case Report

Osteoma de meato acústico externo: relato de nove casos e revisão de literatura

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