Malignant Schwannoma of a plantar digital nerve in the absence of neurofibromatosis

Abstract

Malignant Schwannoma is a rare tumour of nerve sheath origin commonly associated with neurofibromatosis. A solitary tumour of plantar digital nerves in the absence of neurofibromatosis is even rarer and only one such case has been previously reported.1We present the case of a patient who presented with symptoms and signs clinically diagnostic of a Morton’s interdigital neuroma localized in the web space between the hallux and the index toe. The patient had no external features of Von Recklinghausen’s neurofibromatosis (VRN) yet excisional biopsy revealed a malignant Schwannoma.