Schwannomas of the upper extremity: Diagnosis and treatment

Adani, Roberto; Baccarani, Alessio; Guidi, Enrico; Tarallo, Luigi

doi:10.1007/s12306-008-0049-0

Cited by 75 publications

(125 citation statements)

References 24 publications

Supporting

Mentioning

108

Contrasting

Unclassified

Order By: Relevance

“…3). [7][8][9][10] Porém, uma parte dos schwanomas [11][12][13] No estudo efectuado, onde se procedeu apenas à análise dos casos de Schwanoma do membro superior pela apetência do serviço para este segmento anatómico, verificamos parestesias no pós-operatório imediato com taxa de incidência de 53%.…”

Section: Discussionunclassified

Schwanoma do Membro Superior: Análise Retrospectiva de 17 Casos

2016

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionunclassified

Schwanoma do Membro Superior: Análise Retrospectiva de 17 Casos

2016

View full text Add to dashboard Cite

show abstract

“…The "target sign" may also appear in neurofibromas and this can be helpful in diagnosing a schwannoma. However this cannot be a definitive characteristic finding [4]. In this case, MRI findings show a low signal intensity in T1 weighted image and a moderate signal intensity in T2 weighted image.…”

Section: Discussionmentioning

confidence: 63%

“…However, ultrasonography cannot reliably confirm the attachment of the tumor and the nerve [4]. In this case, we were able to identify the position of the lesion through the ultrasound.…”

Section: Discussionmentioning

confidence: 85%

“…Schwannomas are the most common type of benign tumor of the peripheral nerves which usually develop during 20 -30 years of age [4]. They can occur anywhere in the soft tissue or the viscera, but are most commonly found within major peripheral nerves, especially the sacral nerve in the pelvis or the sciatic nerve.…”

Section: Discussionmentioning

confidence: 99%

“…As for radial neuropathy, it was difficult for an early diagnosis without a palpable mass or a positive Tinel's sign. In 24 patients treated with schwannoma of the upper extremity, 4 cases had no palpable mass and were assessable only by MRI [4]. The authors primarily performed an ultrasound to locate the exact area of the radial neuropathy and identified the lesion at the upper arm.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Incomplete High Radial Nerve Palsy Due to Schwannoma of Radial Nerve in the Upper Arm—A Case Report

Kang¹,

Teong²,

Park³

et al. 2017

OJO

View full text Add to dashboard Cite

A schwannoma is a benign soft tissue tumor composed of Schwann cells. Clinically, the tumor is slow-growing and usually asymptomatic, rarely developing neurological symptoms. We present a case of a 44-year-old female who was diagnosed with an incomplete high radial nerve palsy, showing a wrist drop and extension of fingers due to schwannoma on the radial nerve of the upper arm. The patient showed excellent result after excision of the schwannoma and neurorrhaphy of the radial nerve.

show abstract