title: Extraskeletal osteochondroma of the medial arch of the foot.
abstract: Extraskeletal osteochondromas are benign, slow growing, and often painless neoplasms. Although they are histologically similar to conventional osteochondromas, extraskeletal osteochondromas are not attached to a parent bone. When a well-defined osseous mass in the soft tissue without any direct continuity with the adjacent bone or joint is encountered, a diagnosis of extraskeletal osteochondroma should be strongly considered. It should be identified to avoid unnecessary aggressive surgical treatment. We present a patient with symptomatic extraskeletal osteochondroma of the medial arch of the foot. It was treated by local excision and no evidence of local recurrence clinically or radiographically after 51 months of follow-up.
  
  
  METHODS
  Therapeutic, Level IV, Case study.
authors.affiliation: Department of Orthopaedics and Traumatology, North District Hospital, Hong Kong SAR, China.
authors.forename: Yan Kit
authors.initials: YK
authors.lastname: Sit
authors.forename: Tun Hing
authors.initials: TH
authors.lastname: Lui
mesh_terms: D000293:Adolescent; D005528:Foot / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D015831:Osteochondroma / Q000175:diagnosis* / Q000601:surgery; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed