Benign Schwannoma of the Lateral Plantar Nerve: A Case Report

Abstract

Schwannomas are benign, encapsulated soft-tissue tumors that rarely present to the foot and ankle. These tumors are usually asymptomatic unless an increase in size or disruption of the nerve causes pain. We report a case of a painful mass along the lateral plantar nerve near the fourth metatarsal base that was surgically excised and confirmed as a benign schwannoma by means of histopathologic analysis. At the final follow-up of over 2 years, the patient reported no pain, neurologic deficits, or signs of recurrence. This case demonstrates an unusual location of a schwannoma arising from the lateral plantar nerve.

Rare giant schwannoma of superficial peroneal nerve on the dorsum of foot

“…Giant schwannomas are those which measure more than 5 cm in one dimension. Only eight such cases within the foot and ankle area are reported in literature 9 10. Here, we report a case of a giant schwannoma seen in the dorsolateral aspect of the midfoot.…”

Endoscopic En-Bloc Resection of Neurilemmoma of the Foot Dorsum

“… 2 , 3 It can involve any nerve of the foot and ankle. 1 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 These tumors are usually asymptomatic unless an increase in size or disruption of the nerve causes pain. 6 , 9 The symptoms of neurilemmoma on the foot and ankle are mainly related to pressure effects on the associated nerve (weakness and paresthesia) or pressure areas (e.g., at the sole).…”

“… 1 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 These tumors are usually asymptomatic unless an increase in size or disruption of the nerve causes pain. 6 , 9 The symptoms of neurilemmoma on the foot and ankle are mainly related to pressure effects on the associated nerve (weakness and paresthesia) or pressure areas (e.g., at the sole). 3 The differential diagnoses should include any soft tissue mass that can cause a compressive effect on the neurovascular bundle.…”