title: MR appearance of periosteal chondrosarcoma of the foot.
abstract: OBJECTIVE
  To assess the role of MRI in evaluating periosteal chondrosarcoma in the foot, an anatomically complicated location.
  
  
  METHODS
  Three cases of surgically and histologically confirmed periosteal chondrosarcomas occurring in the foot (58-year-old woman, 57-year-old woman, and 63-year-old man) were retrospectively reviewed with an emphasis on MR findings.
  
  
  RESULTS
  Magnetic resonance successfully delineated the hypovascular nature and lobulating pattern of the lesion suggesting the cartilaginous component, the periosteal location with sparing bone marrow, and the extent of involvement of adjacent structures. These findings were either not seen or less clearly seen on CT in the former two cases.
  
  
  CONCLUSIONS
  In cases of periosteal chondrosarcomas in the foot MRI can play a significant role both in the characterization of the lesion and in planning surgical therapy.
authors: Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan.
authors: G S
authors: GS
authors: Seo
authors: J
authors: J
authors: Aoki
authors: F
authors: F
authors: Fujioka
authors: H
authors: H
authors: Tanikawa
authors: O
authors: O
authors: Karakida
authors: S
authors: S
authors: Sone
authors: K
authors: K
authors: Ishii
mesh_terms: D000671:Amputation, Surgical; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000601:surgery; D002813:Chondrosarcoma / Q000175:diagnosis* / Q000601:surgery; D005260:Female; D005534:Foot Diseases / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008682:Metatarsal Bones / Q000473:pathology*; D008875:Middle Aged; D014034:Toes / Q000473:pathology