title: Rare presentation of metachronous multicentric pelvic and extracranial chondrosarcoma : a case report.
abstract: Conventional chondrosarcomas rarely metastasize and it is extremely unusual to see multicentric- behaviour in malignant cartilage tumour. We report a 40 year old lady with presentation of two non-contiguous metachronous foci of low to intermediate grade of chondrosarcoma over left pelvic bone and right scalp respectively in the absence of pulmonary or visceral metastasis.
  
  
  BACKGROUND
  vacuum assisted closure, infection, instrumentation, spine.
authors.affiliation: Department of Orthopaedics, Hospital Pulau Pinang, Georgetown, Malaysia.
authors.forename: Cyl
authors.initials: C
authors.lastname: Choong
authors.affiliation: Department of Orthopaedics, Hospital Pulau Pinang, Georgetown, Malaysia.
authors.forename: Hz
authors.initials: H
authors.lastname: Chan
authors.affiliation: Department of Orthopaedics, Hospital Pulau Pinang, Georgetown, Malaysia.
authors.forename: A
authors.initials: A
authors.lastname: Azuhairy
authors.affiliation: Department of Orthopaedics, Hospital Raja Perempuan Zainab II, Kota Baru, Malaysia.
authors.forename: M Anwar
authors.initials: MA
authors.lastname: Hau
authors.affiliation: Department of Orthopaedics, Hospital Pulau Pinang, Georgetown, Malaysia.
authors.forename: O
authors.initials: O
authors.lastname: Zulkiflee