schwannoma do forame magno: revisão e relato de caso foramen magnum schwannoma: review of the literature and report of a case

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ID: 147075
2005
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Abstract
Os autores relatam um volumoso schwannoma cervical de apresentação incomum, numa paciente do sexo feminino, 53 anos de idade, que em fevereiro de 2002 apresentou queixa de fraqueza progressiva, iniciada há três anos, com dificuldade de mobilização das pernas e braços. Antes da cirurgia foi realizada ressonância magnética da região cervical. No exame físico apresentava postura com aumento da base de sustentação, marcha instável e paraparética, além de diminuição da força nos quatro membros, maior à esquerda, associada a dispnéia. Na ressonância magnética cervical evidenciou-se lesão expansiva extramedular de limites bem definidos, na altura de C1 e C2. Na cirurgia, o volumoso tumor encontrava-se ântero-lateralmente à medula, aderido à raiz esquerda de C1, estendendo-se superiormente através do forame magno, com localização extradural. O diagnóstico de schwannoma foi confirmado pela histopatologia. A paciente evoluiu satisfatoriamente, com melhora progressiva da hemiparesia e hemiparestesia esquerda. A ressonância magnética possibilita a detecção e avaliação da lesão, porém o diagnóstico definitivo só é feito com o exame histopatológico. Dessa forma, o diagnóstico precoce através da ressonância magnética e a exérese cirúrgica tornam-se a melhor forma de abordagem, com bom prognóstico.
The authors report an unusual presentation of a voluminous neck schwannoma in a 53-year-old female that presented with a three-year history of progressive weakness associated with impaired movement of the limbs. Neurological examination revealed postural instability, unstable and paraparetic gait, tetraparesis and dyspnea. A preoperative magnetic resonance imaging of the neck revealed an expansive, extradural, well-circumscribed lesion, with soft-tissue attenuation, at the level of C1-C2 vertebral bodies. During surgery, the tumor was found to be extradural, lateral to the cervical spinal cord, attached to the C1 left nerve root and extending upwards through the foramen magnum. Histopathological analysis of the resected specimen confirmed the diagnosis of schwannoma. The patient showed a favorable outcome with progressive improvement of the symptoms. Magnetic resonance imaging proved to be valuable in the detection and evaluation of the lesion, although the definite diagnosis was achieved only after histopathological studies. We concluded that magnetic resonance imaging for early diagnosis and prompt surgical resection seems to be the best approach to achieve good prognosis.
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nacif2005radiologiaschwannoma Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Marcelo Souto Nacif;Stella Caiado;Ricardo Andrade Fernandes de Mello;Gustavo Federico Jauregui;Flávio do Amaral Campos;Nidia Di Paula Silva Oliveira;Walter Teixeira de Paula Neto;Alair Augusto Sarmet Moreira Damas dos Santos
Journal india international conference on information processing, iicip 2016 - proceedings
Year 2005
DOI
10.1590/S0100-39842005000100015
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842005000100015
Keywords
central nervous system schwannoma nuclear medicine medical radiology

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