<unk>  (Neuro- is from the Greek for nerve) is defined as a benign tumor of a nerve. However,<unk>  commonly refers to any tumor of cells of the nervous system.<unk> s form part of the peripheral nerve sheath tumors and belong to Reactive class of tumors.<unk>  was first described by Thomas Morton in 1876.<unk> s may be classified according to histopathological features into 3 groups: Morton's<unk> , traumatic<unk> , and neoplasic<unk> s. The pathogenesis of<unk>  is characterized by neural degeneration with epineural and endoneural vascular hyalinization, and perineural fibrosis.<unk>  is more commonly observed among patients aged between 15 to 50 years old.<unk>  is more commonly observed among middle aged adults. Females are more commonly affected with<unk>  than males. The female to male ratio is approximately 5:1. Common risk factors in the development of<unk>  include improper footwear and high impact sports (e.g., rock-climbing, ballet dancing). A major complication of<unk>  is chronic<unk> thic pain. On ultrasound,<unk>  is characterized as a well-defined, hypoechoic lesion located in the intermetatarsal space proximal to the metatarsal head. Patients with<unk>  usually appear with antalgic posture. Physical examination may be remarkable for tenderness to palpation and dysesthetic pain. Surgical excision is the treatment of choice for patients with<unk> ; this surgical intervention is associated with a relatively favorable success rate, approximately 80%. The recurrence rate after surgery is as high as 50%.
Neuroma
Ameloblastoma
Brown tumor
Hemangioblastoma
Noma
PEComa
Myxoma
Schwannoma