Case Presentations and Review of Plexiform Schwannoma in the Foot

Mohammed, Samirah; Pressman, Martin M.; Schmidt, Brian M.; Babu, Nina

doi:10.1053/j.jfas.2013.12.020

Cited by 15 publications

(11 citation statements)

References 15 publications

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“…It typically affects patients aged 1–61 years, with a strong preponderance in young adults aged 20–50 years. [4] The head and neck are frequent sites for schwannoma as 25%–45% of all Schwannomas occur in these areas, but lower lip is quite an uncommon site for its development. [2812] A literature search in MEDLINE revealed only five documented cases of lower-lip schwannomas.…”

Section: Discussionmentioning

confidence: 99%

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Lower lip plexiform schwannoma: Report of a rare case and a literature review

Yaghoobi

Pazyar

2019

Indian J Dermatol

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Plexiform schwannoma is an uncommon benign neoplasm of the neural sheath characterized grossly and microscopically by multinodular growth. It is typically presented as a mobile, solitary, smooth-surfaced, and nontender mass. Histologically, schwannomas are classified into the following seven types: classical (Verocay), plexiform, cellular, cranial nerve, melanotic, degenerated (ancient), and granular cell schwannomas. In spite of the fact that plexiform schwannoma commonly occurs in the head-and-neck region, the involvement of the lip is considered to be extremely rare. Herein, we present the case of a 16-year-old boy with the schwannoma on the lower lip excised without any recurrence at 9 months after surgery.

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Section: Discussionmentioning

confidence: 99%

“…This rare benign tumor is worthy of recognition because it can be misdiagnosed as plexiform neurofibroma. [1] It classically affects young adults aged 20–50 years[4] and is usually confined to the head and neck or trunk. [56] Plexiform schwannoma typically presents as a mobile, solitary, smooth-surfaced, and nontender mass.…”

Section: Introductionmentioning

confidence: 99%

Lower lip plexiform schwannoma: Report of a rare case and a literature review

Yaghoobi

Pazyar

2019

Indian J Dermatol

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“…In the lower limb, they occur rarely in collateral branches of a nerve [4–7]. Furthermore, as a variant of this tumor, the plexiform schwannoma is rare which accounts for less than 5% of all schwannomas and it is difficult to diagnose [8]. Moreover, it is often misdiagnosed due to lack of awareness and often confused with other common lesions like lipoma and fibroma of the ganglion [9].…”

Section: Introductionmentioning

confidence: 99%

Unusual Etiology of Chronic Posterior Leg Pain in a Running Athlete: Could It Be a Schwannoma? A Case Report and Review of the Literature

Elghoul

Zaddoug

Tbouda

et al. 2019

Case Reports in Orthopedics

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Schwannomas represent only 5% of all soft tissue tumors. As a variant of this tumor, the plexiform schwannoma is rare accounting for less than 5% of all schwannomas. Herein, we report a rare case of a 49-year-old athlete who suffered from a pain in the posterior aspect of the right leg one year before his presentation. Initially, a radiograph of his right leg showed no abnormality, and so, the emergency physician discharged him on analgesics and anti-inflammatory medications, and rest was advised. The persistent pain obliged the patient to consult our orthopedic department. On examination, we found a firm mass in the proximal medial aspect of his right leg. The neurovascular exam was normal. Sonography of the leg was not conclusive. Therefore, magnetic resonance imaging was performed, and a hemangioma or schwannoma was suspected. The patient underwent surgery in which the entire tumor mass was shelled out in one piece with no damage. The histopathological finding was concomitant with a plexiform schwannoma. Follow-up evaluation, sixteen months later, showed no evidence of recurrence, and the patient has regained his previous level of sportive activities. So, given the case described here, despite the rarity of the schwannoma, it should be taken into consideration as a possible diagnosis in such situation to promote early diagnosis and appropriate treatment.

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“…The lesion is usually slow-growing and rarely exceed 2 cm in greatest diameter (Ikushima et al 1999). Unlike plexiform neurofibroma, malignant transformation has not been reported (Mohammed et al 2014). Herein, we describe an unusual case of a deep-seated multinodular/plexiform schwannoma originating from the posterior tibial nerve and its larger terminal branch, which was completely enucleated using an intracapsular technique.…”

Section: Introductionmentioning

confidence: 99%

Successful enucleation of large multinodular/plexiform schwannoma of the foot and ankle

et al. 2015

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BackgroundIt is often challenging to completely resect multinodular/plexiform schwannomas involving important deep nerves using minimally invasive surgically techniques.Case descriptionA 32-year-old woman presented with a 5-year history of a slowly growing, painful mass in the medial aspect of the right ankle. Magnetic resonance imaging (MRI) demonstrated multiple nodular lesions with iso-signal intensity relative to skeletal muscle on T1-weighted sequences and heterogeneous high signal intensity on T2-weighted sequences. Mild to moderate enhancement was identified after gadolinium administration. All 58 tumors were completely enucleated using an intracapsular technique. Histological examination confirmed the diagnosis of schwannoma consisting mainly of Antoni A areas. The burning sensation was relieved immediately after surgery. The patient had no aggravated neurological deficit and was very satisfied with the outcome of the treatment at final follow-up.Discussion and evaluationWe experienced a very rare case of a large multinodular/plexiform schwannoma arising from the posterior tibial nerve and its larger terminal branch. Our case had the characteristic MRI features of this condition. It is extremely important to differentiate multinodular/plexiform schwannoma from plexiform neurofibroma and malignant peripheral nerve sheath tumor, with complete surgical enucleation being curative.ConclusionsMRI is a clinically useful modality in the evaluation and detection of deep-seated multinodular/plexiform schwannoma. Intracapsular enucleation seems to be an acceptable treatment for this peculiar tumor located in the foot and ankle.

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Case Presentations and Review of Plexiform Schwannoma in the Foot

Cited by 15 publications

References 15 publications

Lower lip plexiform schwannoma: Report of a rare case and a literature review

Lower lip plexiform schwannoma: Report of a rare case and a literature review

Unusual Etiology of Chronic Posterior Leg Pain in a Running Athlete: Could It Be a Schwannoma? A Case Report and Review of the Literature

Successful enucleation of large multinodular/plexiform schwannoma of the foot and ankle

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