Schwannoma of the median nerve

Hubert, Julien; Landes, G; Tardif, Michèle

doi:10.3109/2000656x.2012.733168

Cited by 16 publications

(15 citation statements)

References 6 publications

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“…2,8 Na mão e punho as queixas de dor são atribuíveis à reduzida expansibilidade das estruturas locais. 6,12,15 No estudo realizado, 10 doentes possuíam a lesão neural localizada na mão ou punho, justificando-se a maior incidência na extremidade do membro superior, pelo facto das estruturas nervosas serem mais numerosas distalmente.…”

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“…1,5,9,15 No exame objectivo pode detectar-se uma neoformação subcutânea ao longo do trajecto nervoso, móvel transversal, mas não longitudinalmente. 2,11 Tal como reportado por outros autores, 1,8,14,15 o sinal de Tinel sobre a massa, que foi objectivado em 82% dos nossos doentes, está frequentemente presente.…”

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“…Macroscopicamente os schwanomas são capsulados com superfície lisa, por vezes com o nervo visível, coloração branca ou amarelada e focos hemorrágicos e/ou císticos. 9,15 Microscopicamente são bem delimitados e demostram arquitectura bifásica de padrão de Antoni A com células fusiformes e núcleos em paliçada (imunopositividade para a proteína S100) e B com menor celularidade. 6,9,15 ( Fig.…”

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“…9,15 Microscopicamente são bem delimitados e demostram arquitectura bifásica de padrão de Antoni A com células fusiformes e núcleos em paliçada (imunopositividade para a proteína S100) e B com menor celularidade. 6,9,15 ( Fig. 4) Este tumor tem um excelente prognóstico com baixa taxa de recorrência e malignização, com a excisão curativa a ser bastante eficaz.…”

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“…4) Este tumor tem um excelente prognóstico com baixa taxa de recorrência e malignização, com a excisão curativa a ser bastante eficaz. 5,7,15 No presente estudo não se comprovou nenhuma recidiva.…”

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Schwanoma do Membro Superior: Análise Retrospectiva de 17 Casos

2016

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RESUMOIntrodução: O schwanoma ou neurilemoma é um tumor benigno dos nervos periféricos e apresenta-se habitualmente como uma lesão única de crescimento indolente, com origem na proliferação das células de Schwann. Representa uma pequena percentagem dos tumores benignos do membro superior, contudo é o mais frequente de origem neural. Apresentamos um estudo retrospectivo de schwanomas do membro superior para estabelecer a abordagem pré-operatória adequada, avaliar a eficácia do tratamento e observar a evolução pós-operatória. ABSTRACT Introduction:Schwannoma or neurilemmoma is a benign peripheric nerve tumor that usually presents as a slow growing single lesion; it has origin in Schwann cells proliferation. Although it represents a small percentage of the benign tumors of the upper arm, it is the most frequent of neural origin. We present a retrospective study of upper limb schwannomas; our aim is establish the appropriate preoperative approach, to recognise the efficiency of the treatment and the pos-operative follow-up. Material and Methods: Review of 17 patients treated between 2007 and 2014 with upper limb schwannoma and characterization as to age, gender, location in the upper limb, signs and symptoms, pre-operative studies, histologic diagnosis and postoperative surveillance. Results: In four of them the schwannoma was localized on the arm, three on the forearm, four on the wrist and 6 on the hand or fingers. We proceed to careful microsurgical dissection in a bloodless field to optimize the functional final result. The enucleation without fascicular lesion was achieved in 12 patients. In five patients we performed the excision of the fascicles involved by the mass. Nine patients developed paresthesias in the immediate postoperative period, with five of them improving in 12 months. One patient presented motor deficit of the radial nerve with partial recover at 12 monts. Discussion: Schwannomas are rare tumours with well circumscribed morphology. Occasionally it appears in upper limb. The preoperative diagnosis is rarely, so normally the diagnosis is established only after excision and histologic study. Conclusion: Schwannoma should be considered as a diagnostic hypothesis when evaluating subcutaneous nodes associated with neurologic symptoms. It is important to query the presence of paresthesias and perform the Tinel sign, both typical of this condition. Imagiological exams have a scarce contribute in the diagnosis. To improve the final result, the preoperative study must be insightful, being advisable to consider the benefits of the surgery compared to the potential iatrogenic damage to the nerve.

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Schwanoma do Membro Superior: Análise Retrospectiva de 17 Casos

2016

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Adventitial cysts of the radial artery are joint connected

2018

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Volar radial wrist masses are common. Adventitial cysts of the radial artery are rarely reported and poorly understood. We describe a case series of adventitial cysts in association with the radial artery and detail their pathophysiology and treatment. We conducted an Institutional Review Board-approved retrospective review of patients treated at our institution from 1997 to 2018. Twelve patients were identified. Presenting symptoms typically included pain and swelling over the volar radial wrist. High-resolution magnetic resonance imaging (MRI) demonstrated tubular, cystic lesions within the adventitia of the radial artery with connections to the wrist joint confirmed on multiplanar imaging: (radiocarpal joint = 10; scaphotrapeziotrapezoidal joint = 1; and intercarpal joint = 1). Seven patients underwent operation, at which time the cyst was resected and the articular branch disconnected. These patients reported resolution of their symptoms without clinical recurrence. The consistent finding of a joint connection in these cases of adventitial cysts associated with the radial artery has important clinical implications. The joint connection needs to be disconnected. Level of evidence: Level IV, case series. Clin. Anat., 2018. © 2018 Wiley Periodicals, Inc.

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Ultrasound Imaging for Preoperative Assessment of Schwannomas in the Palm: A Case Report

Chang,

Huang,

et al. 2024

J of Clinical Ultrasound

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Peripheral nerve sheath tumors of the hand are rare occurrences. Among them, schwannomas are benign tumors originating from peripheral nerves. In this case report, we presented a patient with schwannomas in the palm, examined using ultrasound for preoperative assessment and was confirmed by pathological specimen. By highlighting the utility of ultrasound in detecting this condition, we aimed to enrich existing literature and ultimately enhance patient outcomes.

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Schwannoma of the median nerve

Cited by 16 publications

References 6 publications

Schwanoma do Membro Superior: Análise Retrospectiva de 17 Casos

Schwanoma do Membro Superior: Análise Retrospectiva de 17 Casos

Adventitial cysts of the radial artery are joint connected

Ultrasound Imaging for Preoperative Assessment of Schwannomas in the Palm: A Case Report

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