title: Giant schwannoma of the first metatarsal: a rare entity.
abstract: Schwannomas of osseous origin are rare, and schwannomas of the short tubular bones are even rarer. These benign-looking tumors are difficult to diagnose using imaging alone. However, histopathologic evaluation of a biopsy specimen can establish the diagnosis by identifying Antoni type A and B zones. Curettage and bone grafting will probably be adequate for treatment because malignant changes are unlikely. Large lesions can require en bloc excision and reconstruction. We describe what appears to be only the second case of a schwannoma in the first metatarsal of the foot in a 48-year-old woman. The lesion was poorly contained, with obvious breaks in the cortical shell. The diagnosis was confirmed by pathologic analysis. The lesion was successfully treated with en bloc resection and reconstruction with a nonvascularized fibular graft.
authors.affiliation: Assistant Professor of Orthopaedics, Department of Emergency Medicine, All India Institute of Medical Sciences, New Delhi, India. Electronic address: drtahir.ansari@gmail.com.
authors.forename: Mohammed Tahir
authors.initials: MT
authors.lastname: Ansari
authors.affiliation: Professor, Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Shishir
authors.initials: S
authors.lastname: Rastogi
authors.affiliation: Additional Professor, Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Shah Alam
authors.initials: SA
authors.lastname: Khan
authors.affiliation: Additional Professor, Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Chandershekhar
authors.initials: C
authors.lastname: Yadav
authors.affiliation: Orthopaedic Surgeon, Department of Orthopaedics, Civil Service Hospital, Kathmandu, Nepal.
authors.forename: Laxman
authors.initials: L
authors.lastname: Rijal
mesh_terms: D001859:Bone Neoplasms / Q000175:diagnosis / Q000601:surgery*; D016025:Bone Transplantation; D005260:Female; D005360:Fibula / Q000637:transplantation; D006801:Humans; D008682:Metatarsal Bones; D008875:Middle Aged; D009442:Neurilemmoma / Q000175:diagnosis / Q000601:surgery*
keywords: Schwann cell; bone; fibula; nerve sheath; neurilemmoma; tumor