Giant nasal schwannoma with intracranial extension

Gatscher, Silvia; Love, Seth; Coakham, Hugh B.

doi:10.3171/jns.1998.89.1.0161

Cited by 10 publications

(7 citation statements)

References 4 publications

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“…In terms of age, the greatest incidence in our study was between the third and fi fth decades, which has also been described by other authors. [4][5][6][7][8] The incidence of type I neurofi bromatosis in such cases has ranged from 8% to 18% in the literature, 3,4,8,9 and was found in 19% of the cases studied here. In cases unassociated with neurofi bromatosis, schwannomas are seen clinically as solitary slow-developing lesions that show symptoms only when large areas have been affected.…”

Section: Discussionmentioning

confidence: 98%

Schwannomas in the head and neck: retrospective analysis of 21 patients and review of the literature

et al. 2007

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CONTEXT AND OBJECTIVE: Schwannomas are benign neoplasms of the peripheral nerves originating in the Schwann cells. According to their cellularity, they can be subdivided into Antoni A or Antoni B types. They are rare and usually solitary, with clearly delimited capsules. They occur in the head and neck region in only 25% of the cases, and may be associated with Von Recklinghausen's disease. The present study retrospectively analyzed some data on this disease in the head and neck region and reviewed the literature on the subject. DESIGN AND SETTING: Retrospective study at Head and Neck Service, Universidade Estadual de Campinas. METHODS: Data on 21 patients between 1980 and 2003 were reviewed. The sites of cervical schwannomas and the intraoperative, histopathological and postoperative clinical status of these cases were studied. Diagnostic methods, type of surgery and association with neurofibromatosis were evaluated. RESULTS: The patients' ages ranged from 16 to 72 years. Four patients had a positive past history of type I neurofibromatosis or Von Recklinghausen's disease. The nerves affected included the brachial and cervical plexuses, vagus nerve, sympathetic chain and lingual or recurrent laryngeal nerve. The nerve of origin was not identified in six cases. Tumor enucleation was performed in 16 patients; the other five required more extensive surgery. CONCLUSION: Schwannomas and neurofibromas both derive from Schwann cells, but are different entities. They are solitary lesions, except in Von Recklinghausen's disease. They are generally benign, and rarely recur. The recommended surgical treatment is tumor enucleation.

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Section: Discussionmentioning

confidence: 98%

Schwannomas in the head and neck: retrospective analysis of 21 patients and review of the literature

et al. 2007

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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%

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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“…The features presented are those of a benign, slow growing tumor of greater signal intensity than polyps or mucoceles 8 .The differential diagnosis must include papilloma, sarcoma, carcinoma, and lymphoma 19 .…”

Section: Discussionmentioning

confidence: 99%

“…Although up to 45% of all schwannomas occur in the head and neck region 3 , the involvement of the nasal cavity and paranasal sinuses is rare, with approximately 40 cases reported [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] . From those cases, only four have been associated with intracranial extension into the anterior cranial fossa [4][5][6][7][8]18 .…”

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confidence: 99%

Naso-ethmoid schwannoma with intracranial extension: case report

Siqueira

Jennings

Moraes

et al. 2001

Arq. Neuro-Psiquiatr.

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-Intranasal schwannomas are rare lesions, specially when they present with an intracranial extension. The fifth case in the medical literature of a naso-ethmoid schwannoma with extension into the anterior cranial fossa is presented. The magnetic resonance findings and the details of the combined intracranial / transfacial operative approach used are described. The possible origin and the clinical characteristics of this rare lesion are reviewed.KEY WORDS: schwannoma, intranasal schwannoma, paranasal sinus tumor. Schwannoma naso-etmoidal com extensão intracraniana: relato de casoRESUMO -Schwannomas intranasais são lesões raras, principalmente quando apresentam um extensão intracraniana. Estamos apresentando o quinto caso da literatura médica de um schwannoma naso-etmoidal com extensão para o interior da fossa craniana anterior. São descritos os achados da ressonância magnética e os detalhes da via de acesso cirúrgico combinada intracraniana/transfacial. A possível origem e as características clínicas dessa lesaõ rara são revistas. PALAVRAS-CHAVE: schwannoma, schwannoma intranasal, tumor de seio paranasal.

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Giant nasal schwannoma with intracranial extension

Cited by 10 publications

References 4 publications

Schwannomas in the head and neck: retrospective analysis of 21 patients and review of the literature

Schwannomas in the head and neck: retrospective analysis of 21 patients and review of the literature

Subfrontal Schwannoma Mimicking Neuroblastoma: Case Report

Naso-ethmoid schwannoma with intracranial extension: case report

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