Isolated peripheral neurilemoma attached to the tendon of the flexor digitorum longus muscle

Unusual presentation of lateral sural cutaneous nerve schwannoma: An exceptional case report

Introduction

Schwannoma is the most common benign nerve sheath tumor. Peripheral nerves of the lower extremity are rarely involved and usually asymptomatic.

Case presentation

We report the case of a misleading clinical presentation of lateral sural cutaneous nerve schwannoma.

Discussion

To the best of our knowledge, no case has been reported about the location of schwannoma in the lateral sural cutaneous nerve. MRI and anatomopathologic assessment, after microscopic enucleation, are required to confirm diagnosis.

Conclusion

Care must be taken to not miss a schwannoma of lateral sural cutaneous nerve by meticulous clinical examination and appropriate imaging using MRI in unexplained L5 sciatica.

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Schwannoma is the most common benign nerve sheath tumor

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Peripheral nerves of the lower extremity are rarely involved and usually asymptomatic

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MRI shows isointense or decreased signal relative to the skeletal muscle on T1-weighted images and heterogeneously increased signal intensity on T2-weighted images

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Microscopic enucleation is treatment of choice

Schwannoma of the left foot: a brief overview with focus on associated clinical syndromes

In this article, we present a 25-year-old man who developed an asymptomatic schwannoma on his left lateral heel and review the salient features of this cutaneous condition. A schwannoma is a slowly growing neoplasm of Schwann cell origin. Histology shows high cellularity (Antoni A regions), nuclear palisades (Verocay bodies), and alternating myxoid regions (Antoni B regions). Very few cases have been reported on the foot or ankle. As with this patient, most schwannomas do not cause symptoms, but some result in dysesthesia and nerve dysfunction. Multiple schwannomas may indicate an underlying syndrome such as neurofibromatosis type 1, type 2, and schwannomatosis. The differential diagnosis for schwannoma includes fibrosarcoma, leiomyosarcoma, and neurofibroma. The definitive treatment is surgical excision. This usually results in complete resolution with minimal recurrence, as was the case for this patient.

Isolated schwannoma attached to the paratenon of semitendinosus muscle

Schwannomas are benign tumors arising from the peripheral nerves with a Schwann cell sheath. Schwannomas can be found in almost every region, but are usually associated with cranial, spinal, sympathetic and peripheral nerves. Schwannoma in lower extremity is relatively common and most are associated with sciatic nerve, peroneal nerve and tibial nerve. However, schwannoma arising in the tendon or paratenon is extremely rare. We report a rare case of a 25-year-old male patient with a schwannoma originating from the paratenon of semitendinosus muscle without evidences of any neurologic symptoms. The clinical history, plain radiographs, magnetic resonance imaging, and pathologic findings of the reported patient have been reviewed. The tumor was fully excised by dissecting a tendon sheath of semitendinosus muscle.

A case report of three peripheral schwannomas attached to the Achilles paratenon

BACKGROUND

Schwannomas are uncommon slow growing tumours arising from the nerve sheath or Schwann cell.

OBJECTIVE

To report a case of multiple schwannomas arising form the achilles paratenon.

METHODS

A 38 year old man presented lumps on the dorsum of his leg. He was clinically evaluated, subjected to imaging studies and surgery.

RESULTS

3 separate lumps where removed measuring 10, 12, and 12mm. They here confirmed to be schwannomas on hitochemical staining.

CONCLUSION

A schwannoma must be considered in the differential of lumps in the lower leg. This is the first report of schwanommas associated with the paratenon. Removal of such masses is warranted to prevent local erosion.

Foot schwannomas that mimic nerve-entrapment syndromes: a report of three cases

Schwannomas of the foot are rare. We describe three cases that mimicked compressive neuropathy, two resembling tarsal tunnel syndrome and a third resembling Morton's neuroma. All three patients had complete resolution of their pain after resection of the tumor.