Unusual cerebello-pontine angle tumours

Moffat, David A.; Saunders, James E.; McElveen, John T.; McFerran, Don; Hardy, David G.

doi:10.1017/s0022215100125393

Cited by 92 publications

(54 citation statements)

References 11 publications

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“…Regardless of the clinical reflection, it is difficult to distinguish angle medulloblastomas from other tumors located in this region (6).The most common pathologic lesions of cerebellopontine angle are acoustic neurinomas, meningiomas, primary cholesteatomas and epidermoid tumors (7). In our case the tumor was located extraaxially which was extremely rare at pediatric age.…”

Section: Discussionmentioning

confidence: 76%

Menenjiomu taklit eden anormal yerleşimli medulloblastom olgusu

Özgüral¹,

Eroğlu²,

Bahadir³

et al. 2017

Ege Tıp Dergisi

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Medulloblastoma is one of the most common primitive neuroectodermal tumors at pediatric age. It is usually located at fourth ventricle originated from vermis. Pontocerebellar angle medulloblastomas are rare and are mostly localized intraaxially. It can be confused with other tumors such as meningioma and schwannoma which are usually seen at this zone. In this report, a 16-year-old girl having medulloblastoma located at the pontocerebellar angle extraaxially and mimicking as meningioma was presented.

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Section: Discussionmentioning

confidence: 76%

Menenjiomu taklit eden anormal yerleşimli medulloblastom olgusu

Özgüral¹,

Eroğlu²,

Bahadir³

et al. 2017

Ege Tıp Dergisi

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“…Meningiomas are the second most common tumor of the cerebellopontine angle (CPA) accounting for 3.1 to 12 % of all tumors following acoustic neuroma, which represent 76 to 91.3 % of the total [1][2][3] . Usually CPA meningiomas arise from the dura of the petrous bone and are classified according to their origin, in relation to the International Auditory Canal (IAC) 4 .…”

Section: Meningioma Do Meato Acústico Interno: Relato De Casomentioning

confidence: 99%

Meningioma of the internal auditory vanal: case report

Amato

Colli

Carlotti

et al. 2003

Arq. Neuro-Psiquiatr.

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-Meningiomas limited to the internal auditory canal (IAC) are rare. Acoustic neuroma is usually the diagnosis made when a tumor is found in this location because of its higher frequency. We report on a 58 year-old woman with a meningioma arising from the IAC and the difficulty to establish the pre-surgical diagnosis, based on clinical and radiological features. The perioperative suspicion and confirmation are very important to deal with the dura and bone infiltration in order to reduce tumor recurrence.KEY WORDS: meningioma, internal auditory canal, acoustic neuroma. Meningioma do meato acústico interno: relato de casoRESUMO -Meningiomas restritos ao meato acústico interno são raros. O neurinoma do acústico é o principal diagnóstico diferencial feito quando um tumor é encontrado nesta região devido a sua maior freqüência. Apresentamos o caso de uma mulher de 58 anos de idade com meningioma localizado no meato acústico interno e as dificuldades na realização do diagnóstico pré-operatório considerando-se as apresentações clínica e radiológica. A suspeita e a confirmação do diagnóstico intraoperatório são importantes porque a dura subjacente e eventual osso comprometido devem ser ressecados para reduzir a possibilidade de recidiva.PALAVRAS-CHAVE: meningioma, meato acústico interno, neurinoma do acústico. Meningiomas are the second most common tumor of the cerebellopontine angle (CPA) accounting for 3.1 to 12 % of all tumors following acoustic neuroma, which represent 76 to 91.3 % of the total [1][2][3] . Usually CPA meningiomas arise from the dura of the petrous bone and are classified according to their origin, in relation to the International Auditory Canal (IAC) 4 . Meningiomas arising within the IAC are considered rare; only 22 cases of these tumors were reported in the literature [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] , eleven cases were limited to the IAC, while the others also extended to the CPA. Controversy exists in the literature if the meningioma can arise within the IAC or its involvement occurs secondarily by extension of CPA tumors 5 . The first histologically proven case of a purely intracanalicular meningioma was reported by Virchow in 1863 6 . In the present report we describe a meningioma of the IAC and the difficulty to establish the preoperative diagnosis, since the clinical findings can simulate an acoustic neuroma and the radiological examination can also be quite similar [4][5][6][7][8][9][10][11][12][13]18 . The surgical strategy is also discussed. CASEA 58 year-old female presented in May 2002 with a 2-month history of sudden hearing loss and tinnitus on the right. A retro-cochlear disease diagnosis was made based on auditory examinations. The pure-tone audiometry revealed a left descendent sensorineural hearing loss, mild at 500 and 1000 Hz and severe at 8000 Hz. The right speech discrimination score was 72% with monosyllables and 92% with disyllables, the left year score was 100% with monosyllables. The imitanciometry revealed a bilateral A curve at the tympanogr...

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“…In contrast, meningiomas arising within the internal auditory canal (IAC) are quite rare, 4,11,17) with only about 50 cases. 2) The most common IAC tumor is vestibular schwannoma (VS), followed by meningioma, arachnoid cyst, hemangioma, lipoma, neurofibroma, facial neuroma, and malignant lymphoma.…”

Section: Introductionmentioning

confidence: 99%

Meningioma of the Internal Auditory Canal With Rapidly Progressive Hearing Loss -Case Report-

Ishikawa

Kawamata

Kawashima

et al. 2011

Neurol. Med. Chir.(Tokyo)

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A 38-year-old male presented with a meningioma within the internal auditory canal (IAC) manifesting as rapidly progressive hearing loss over a period of one month. He had a 2-year history of tinnitus. Magnetic resonance imaging revealed a 10-mm intracanalicular tumor, which was surgically resected by a retrosigmoid lateral suboccipital approach. The histological findings showed meningothelial meningioma. The patient had no facial palsy after surgery, but his cochlear function did not recover. Common symptoms of IAC meningiomas are tinnitus and hearing loss, but rapidly progressive hearing loss is very rare. IAC meningioma is rare but should be taken into consideration as a cause of rapidly progressive hearing loss.

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Unusual cerebello-pontine angle tumours

Cited by 92 publications

References 11 publications

Menenjiomu taklit eden anormal yerleşimli medulloblastom olgusu

Menenjiomu taklit eden anormal yerleşimli medulloblastom olgusu

Meningioma of the internal auditory vanal: case report

Meningioma of the Internal Auditory Canal With Rapidly Progressive Hearing Loss -Case Report-

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