Misdiagnosed Schwannoma of the Medial Plantar Nerve of the Foot

Metatarsalgia is a condition defined as a compression syndrome mechanically induced by intrinsic and extrinsic biomechanical factors that result in sharp pain, paresthesia and in some cases numbness of the forefoot. Metatarsalgia is often referred to as a symptom, rather than as a specific disease. Common causes of metatarsalgia include neuroma between the toes (also known as Morton’s neuroma), metatarsophalangeal synovitis, avascular necrosis, sesamoiditis, and inflammatory arthritis [1]. Sometimes pain irradiates in the midfoot or in the whole foot, making difficult to distinguish other problems such as: tarsal tunnel syndrome, neuroma or schwannoma of the foot nerves. We present a case of a patient with Schwannoma in atypical localization the medial plantar nerve of the foot causing severe metatarsalgia.