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.