title: Two cases of post-radiation osteosarcoma of the sacrum after pelvic irradiation for uterine cervical cancer.
abstract: BACKGROUND
  Post-radiation pelvic bone sarcoma can result as a long-term sequela of pelvic irradiation for uterine cervical cancer.
  
  
  METHODS
  A 59-year-old woman who had received pelvic irradiation for Stage IIB uterine cervical cancer 16 years before was diagnosed as having post-radiation osteosarcoma of the sacrum. Another 66-year-old woman who had received pelvic irradiation for Stage IIIB uterine cervical cancer seven years previously was also diagnosed as having pleomorphic sarcoma of the sacrum.
  
  
  CONCLUSIONS
  When a bone lesion is observed at a previously irradiated field, post-radiation sarcoma should be considered and differentiated from bone metastases.
authors.affiliation: Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: J M
authors.initials: JM
authors.lastname: Noh
authors.forename: S J
authors.initials: SJ
authors.lastname: Huh
mesh_terms: D000368:Aged; D001859:Bone Neoplasms / Q000209:etiology / Q000473:pathology / Q000556:secondary*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000209:etiology* / Q000473:pathology; D012516:Osteosarcoma / Q000209:etiology / Q000473:pathology / Q000556:secondary*; D011878:Radiotherapy / Q000009:adverse effects; D012447:Sacrum / Q000473:pathology*; D002583:Uterine Cervical Neoplasms / Q000473:pathology / Q000532:radiotherapy*