Intraneural Ganglion of Peroneal Nerve: A Case Report and Review of Literature

Abstract

Intraneural ganglion was a less common disease in the literature. The exact pathologic mechanism was still unclear. Among the cases presented before, the most common site of such lesion was common peroneal nerve. It caused signs and symptoms of neuropathy of affected superficial and deep peroneal nerve, including progressive weakness in dorsiflexion of the ankle, pain and tenderness around fibular head and paresthesia radiating to anterolateral surface of the lower leg as well as the dorsum of foot. The clinical course might fluctuate after conservative treatment, and if not diagnosed and treated early, it might eventually cause serious sequelae despite aggressive surgical intervention later on. We herein present a female adult with history of minor trauma with right knee contusion and right ankle sprain 3 years before the development of neurological symptoms. The trauma history was suspected to be related to the development of an intraneural ganglion of right common peroneal nerve over popliteal area. Excision of the intraneural ganglion cyst was performed and 1 year follow up revealed partial recovery of motor function of deep peroneal nerve. The literature is also reviewed.