Verocay J: Zurkenntnis der neurofibrome. Beitr Pathol Anat Allg Pathol 48 : 1, 1910.
Stout AP: The peripheral manifestations of the specific nerve sheath tumor (neurilemoma). Am J Cancer 24 : 751, 1935.
Angelini A , Bevoni R & Biz C et al.: Schwannoma of the foot: report of four cases and literature review. Acta Biomed 90 : 219, 2019.
Keleş E , Eroğlu O & Özercan İH et al.: Schwannoma in the supraclavicular region: case report. Turk Arch Otorhinolaryngol 56 : 54, 2018.
Carvajal JA , Cuartas E & Qadir R et al.: Peripheral nerve sheath tumors of the foot and ankle. Foot Ankle Int 32 : 163, 2011.
Jabra AS & Godoy J: Rare schwannoma nerve tumor in a lesser toe: a case report. JAPMA 109 : 322, 2019.
Merritt G IV , Ramil M & Oxios A et al.: Schwannoma of the plantarmedial aspect of the foot: a case report. Foot 39 : 85, 2019.
Muratori F , De Gori M & Campo FR et al.: Giant schwannoma of the foot: a case report and literature review. Clin Cases Miner Bone Metab 14 : 265, 2017.
Ly P: Solitary benign schwannoma of the foot presenting clinically as a ganglion cyst. JAPMA 108 : 340, 2018.
Odom RD , Overbeek TD & Murdoch DP et al.: Neurilemoma of the medial plantar nerve: a case report and literature review. J Foot Ankle Surg 40 : 105, 2009.
Still GP: Neurilemoma of the medial plantar nerve: a case report. J Foot Ankle Surg 40 : 236, 2001.
Hughes P , Miranda R , Doyle AJ : MRI imaging of soft tissue tumors of the foot and ankle. Insights Imaging 10 : 60, 2019.
Rodriguez FJ , Folpe AL & Giannini C et al.: Pathology of peripheral nerve sheath tumors: diagnostic overview and update on selected diagnostic problems. Acta Neuropathol 123 : 295, 2012.
Judd T , Jones T & Thornberry L: Schwannoma of the posterior tibial nerve. JAPMA 104 : 539, 2014.
Macdonald DJ , Holt G & Vass K et al.: The differential diagnosis of foot lumps: 101 cases treated surgically in North Glasgow over 4 years. Ann R Coll Surg Engl 89 : 272, 2007.
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.
Wake Forest Baptist Medical Center, Winston-Salem, NC.