Intracranial extension of a naso-ethmoid schwannoma

Enion, David; Jenkins, Alistair; Miles, John B.; Diengdoh, J. V.

doi:10.1017/s0022215100116664

Cited by 28 publications

(16 citation statements)

References 8 publications

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“…As shown in Table 1, of the 49 documented schwannomas, 16 (33%) extended into the nasal cavity 6,7,8,10,12,13,19,21,23,24,26. They included four intranasal schwannomas that extended into the anterior cranial fossa 6,7,8,10.…”

Section: Discussionmentioning

confidence: 99%

“…They commonly arise from the vestibular nerve and less commonly from the fifth, ninth, and tenth cranial nerves. Schwannomas of the olfactory groove or subfrontal region are rare; 49 cases have been reported to date 3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26. Because of their rarity, these tumors can be misdiagnosed preoperatively as meningioma or olfactory neuroblastoma.…”

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confidence: 99%

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Subfrontal Schwannoma Mimicking Neuroblastoma: Case Report

Yamahata

Hirahara²,

Tomosugi³

et al. 2011

Skull Base Rep

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Computed tomography (CT), performed in a healthy 28-year-old man after minor head injury, detected a frontal base tumor. Neurological examination revealed left hyposmia. On magnetic resonance imaging scans, there was a heterogeneously enhanced tumor located in the left paramedian frontal base with extension into the left ethmoid sinus. Angiography showed a hypervascular mass in the left anterior cranial fossa; it was mainly fed by the left ethmoidal artery. Positron emission tomography scanning showed moderate accumulation of 11-methylmethionine and low accumulation of 18-fluorodeoxyglucose (FDG) at the tumor site. Bone image CT disclosed compressive, nondestructive deformation of the left frontal base. The preoperative diagnosis was olfactory neuroblastoma or meningioma. The tumor was totally resected via bifrontal craniotomy. The tumor was histologically diagnosed as typical schwannoma; it was positive for S-100 protein. We report a rare subfrontal schwannoma with extension into the nasal cavity that mimicked neuroblastoma. Low FDG accumulation and compressive deformation of the anterior skull base may help in the differential diagnosis of these tumors.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Subfrontal Schwannoma Mimicking Neuroblastoma: Case Report

Yamahata

Hirahara²,

Tomosugi³

et al. 2011

Skull Base Rep

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“…They reported an age distribution ranging from 6 to 78 years, with most of the patients between 25 and 55 years of age, without any peculiar prevalence of race or sex [12,21]. The lesion is almost always solitary, but instances of multiple schwannomas have been documented, particularly in Von Recklinghausen's disease [18].…”

Section: Discussionmentioning

confidence: 99%

Schwannoma of the nasal septum: a case report with review of the literature

Berlucchi

Piazza

Blanzuoli

et al. 2000

European Archives of Oto-Rhino-Laryngology

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Schwannomas are neurogenic neoplasms rarely found in the sinonasal tract, where localization to the nasal septum is exceedingly rare (only 11 cases have been described in the western literature). We report the case of a 29-year-old white male with a schwannoma completely filling the left nasal fossa and arising from the bony part of the septum. A computer tomography (CT) scan and a biopsy suggestive of benign schwannoma were obtained before the lesion was removed by a degloving approach. The preoperative diagnosis of nasal septum schwannoma was confirmed. The patient is asymptomatic and without endoscopic evidence of recurrence 7 years after surgery. A review of the literature with particular emphasis on the clinical presentation, histological features, differential diagnosis and therapeutic options for such a rare lesion is included.

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“…A nasoethmoidal schwannoma with intracranial extension may be impossible to differentiate preoperatively from one arising in the olfactory groove [10].…”

Section: Discussionmentioning

confidence: 98%