Schwanoma do ramo mandibular do nervo trigêmeo: relato de caso

Neto, Manoel Antônio de Paiva; Stamm, Aldo Eden Cassol; Braga, Fernando de Menezes

doi:10.1590/s0004-282x2001000600023

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…Schwannoma is a rare benign neoplasm of the cranial and spinal nerve sheath originating in SC, first described in 1910 by Verocay and affecting between 25% and 48% in the head and neck region and with only approximately 1% intraoral. [7][8][9][10][11][12][13] This percentage of the incidence of the tumor in the oral cavity is related to several sites, mainly on the tongue, however, no clinical case was found in the literature involving its plexiform variant in the maxillary gingival alveolar ridge, as shown in the present report.…”

Section: Discussionmentioning

confidence: 89%

Plexiform schwannoma in the maxillary alveolar ridge

Bueno¹,

Duarte²,

Sinhorini³

et al. 2021

J Oral Diag

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Schwannomas are benign tumors of the peripheral nerve sheath originating from Schwann cells, which can manifest in head and neck regions and are rare in the oral cavity, especially their involvement in the maxillary alveolar ridge, which is even more atypical. Among all its variants, plexiform schwannoma is characterized by an intraneural multinodular growth.Its differential diagnosis of plexiform neurofibroma is justified by the fact that the latter is pathognomonic for neurofibromatosis and carries great risks of malignancy. In this paper, we present a rare clinical case report of a plexiform schwannoma in a gingival alveolar ridge in a 33-year-old male patient, in which we describe his clinical, histopathological, immunohistochemical aspects and his due approach which, after incisional biopsy diagnosed with plexiform schwannoma, was approached for excision of the lesion by the maxillofacial surgery of Hospital das Cínicas, University of São Paulo Medical School, as well as their respective 7, 14 and 30 day postoperative periods, no signs of recurrence so far. Therefore, in these cases, we emphasize the importance of a thorough clinical examination and the need for additional tests, such as histopathological and immunohistochemical analyzes to determine the correct diagnosis and promote the appropriate treatment.

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Section: Discussionmentioning

confidence: 89%

Plexiform schwannoma in the maxillary alveolar ridge

Bueno¹,

Duarte²,

Sinhorini³

et al. 2021

J Oral Diag

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Giant dumbbell-shaped middle cranial fossa trigeminal schwannoma with extension to the infratemporal and posterior fossae

Kouyialis

Stranjalis

Papadogiorgakis

et al. 2007

Acta Neurochir (Wien)

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We present a 38-year-old female with a giant dumbbell-shaped trigeminal neurinoma originating primarily in the middle cranial fossa, extending to the infratemporal and posterior fossae through the foramen ovale and Meckel's cave, respectively. Because of the large tumour extension into the Infratemporal Fossa, a combined skull base approach (zygomatic infratemporal - transmandibular) was utilised for tumour removal, with a subsequent excellent outcome. An extensive literature review since 1935, revealed 580 cases of surgically treated trigeminal neurinomas. Among these, only three were located in three distinct compartments, making this the rarest developmental pattern for trigeminal neurinomas.

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Schwannoma benigno do nervo intercostal simulando neoplastia de pulmão: relato de caso

Rodriguez

Munhoz

Zampier

et al. 2004

Arq. Neuro-Psiquiatr.

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RESUMO -Homem de 37 anos, branco, tabagista, foi internado com tosse seca e dor no hemitórax esquerdo (HE). Ao exame, macicez e murmúrio vesicular diminuído no terço médio do HE. A tomografia axial computadorizada de tórax revelou lesão expansiva nodular do 7º arco costal, projetando-se para o interior do HE, com densidade de parte mole e discreto realce pelo contraste. A histologia e a imuno-histoquímica foram compatíveis com schwannoma benigno. Consideramos que o diagnóstico de schwannoma benigno intercostal deve ser aventado ante toda massa intratorácica posterior ou lateral que curse com escassa sintomatologia e ausência de manifestações clínicas de malignidade. PALAVRAS-CHAVE: schwannoma, schwannoma intercostal, schwannoma benigno. Benign intercostal nerve schwannoma simulating pulmonary neoplasm: case reportABSTRACT -A 37 years-old white man, smoker, was interned for having dry cough and pain in the left hemithorax (HE). The exam has show diminished vesicle mumble in the medium third part of the HE. The thorax computer thomography showed expansive nodular lesion of the 7º coster arch projecting within the HE, with density of the bulk part and discreet enhance by the contrast. Imuno-histochemistry was compatible to benign schwannoma. We consider the intercostal benign schwannoma diagnosis must be taken before all the posterior or lateral intrathoracic mass that follows with small syntomathology and absence of clinical manifestation of malignity. [4][5][6][7][8] . Suas manifestações clínicas dependem do tamanho do tumor e de sua localização anatômica 9 . É de difícil diagnóstico clínico, suspeitando-se pelas características da peça cirúr-gica e pelo tipo e arranjo celular comum aos tumores de bainha nervosa, e confirmado pela detecção imuno-histoquímica da proteína S-100 9,10 . Tem sido reportado em quase todas as partes do organismo, desde o tálamo 11 até na vesícula seminal 12 . Usualmente é encontrado no mediastino, retroperitônio ou pelve, raramente ocorrendo na parede torácica 13 . Na parede torácica originam-se quase sempre dos nervos intercostais 14-17 e raras vezes da pleura 18,19 . A maioria é benigno, mas existem casos malignos 18,20 . Quando localizados na parede torácica, os sintomas mais freqüentes são tosse irritativa, dispnéia e dor torácica 13,21,22 . Alguns pacientes cursam assintomáticos, então o diagnóstico é feito incidentalmente nos estudos radiológicos de rotina 23 . Nos casos em que se apresenta como um nódulo solitário pulmonar, pode confundir-se com neoplasia de pulmão, sarcoma de partes moles

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Schwanoma do ramo mandibular do nervo trigêmeo: relato de caso

Cited by 3 publications

References 28 publications

Plexiform schwannoma in the maxillary alveolar ridge

Plexiform schwannoma in the maxillary alveolar ridge

Giant dumbbell-shaped middle cranial fossa trigeminal schwannoma with extension to the infratemporal and posterior fossae

Schwannoma benigno do nervo intercostal simulando neoplastia de pulmão: relato de caso

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