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Parosteal Osteosarcoma
Behrang Amini, MD, PhD; B. J. Manaster, MD, PhD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Diagnostic Checklist

          TERMINOLOGY

          • Abbreviations

            • Osteosarcoma (OS)
          • Synonyms

            • Not recommended: juxtacortical OS
          • Definitions

            • Low-grade, malignant, bone-forming neoplasm that arises on surface of bone

          IMAGING

          • General Features

            • Imaging Recommendations

              • Radiographic Findings

                • CT Findings

                  • MR Findings

                    • Image-Guided Biopsy

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          • Staging, Grading, & Classification

                            • Gross Pathologic & Surgical Features

                              • Microscopic Features

                                CLINICAL ISSUES

                                • Presentation

                                  • Demographics

                                    • Natural History & Prognosis

                                      • Treatment

                                        DIAGNOSTIC CHECKLIST

                                        • Consider

                                          Selected References

                                          1. Amini B et al: Osteoid tumors of bone. Semin Ultrasound CT MR. 42(2):134-49, 2021
                                          2. Wang J et al: Osteosarcoma. In Fletcher CDM et al: WHO Classification of Tumours: Tumours of Soft Tissue and Bone. IARC Press, 410-3. 2020
                                          3. Ruengwanichayakun P et al: Parosteal osteosarcoma: a monocentric retrospective analysis of 195 patients. Hum Pathol. 91:11-8, 2019
                                          4. Hang JF et al: Parosteal osteosarcoma. Arch Pathol Lab Med. 138(5):694-9, 2014
                                          5. Shimoyama T et al: Cortical bone remodeling in parosteal osteosarcoma mimicking medullary involvement: a case with the difficulty in pre-surgical staging. Tohoku J Exp Med. 233(3):165-9, 2014
                                          6. Klein MJ: Parosteal osteosarcoma dedifferentiating into telangiectatic osteosarcoma: importance of lytic changes and fluid cavities at imaging. Skeletal Radiol. 39(1):69; author reply 71, 2010
                                          7. Yarmish G et al: Imaging characteristics of primary osteosarcoma: nonconventional subtypes. Radiographics. 30(6):1653-72, 2010
                                          8. Azura M et al: Parosteal osteosarcoma dedifferentiating into telangiectatic osteosarcoma: importance of lytic changes and fluid cavities at imaging. Skeletal Radiol. 38(7):685-90, 2009
                                          9. Cardona DM et al: Dedifferentiated parosteal osteosarcoma with giant cell tumor component. Skeletal Radiol. 37(4):367-71, 2008
                                          10. Dönmez FY et al: MRI findings in parosteal osteosarcoma: correlation with histopathology. Diagn Interv Radiol. 14(3):142-52, 2008
                                          11. Takeuchi K et al: Dedifferentiated parosteal osteosarcoma with well-differentiated metastases. Skeletal Radiol. 35(10):778-82, 2006
                                          12. Bertoni F et al: Dedifferentiated parosteal osteosarcoma: the experience of the Rizzoli Institute. Cancer. 103(11):2373-82, 2005
                                          13. Jelinek JS et al: Parosteal osteosarcoma: value of MR imaging and CT in the prediction of histologic grade. Radiology. 201(3):837-42, 1996
                                          14. Murphey MD et al: The many faces of osteosarcoma. Radiographics. 17(5):1205-31, 1997
                                          15. Wold LE et al: Dedifferentiated parosteal osteosarcoma. J Bone Joint Surg Am. 66(1):53-9, 1984
                                          Related Anatomy
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                                          Related Differential Diagnoses
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                                          References
                                          Tables

                                          Tables

                                          KEY FACTS

                                          • Terminology

                                            • Imaging

                                              • Top Differential Diagnoses

                                                • Diagnostic Checklist

                                                  TERMINOLOGY

                                                  • Abbreviations

                                                    • Osteosarcoma (OS)
                                                  • Synonyms

                                                    • Not recommended: juxtacortical OS
                                                  • Definitions

                                                    • Low-grade, malignant, bone-forming neoplasm that arises on surface of bone

                                                  IMAGING

                                                  • General Features

                                                    • Imaging Recommendations

                                                      • Radiographic Findings

                                                        • CT Findings

                                                          • MR Findings

                                                            • Image-Guided Biopsy

                                                              DIFFERENTIAL DIAGNOSIS

                                                                PATHOLOGY

                                                                • General Features

                                                                  • Staging, Grading, & Classification

                                                                    • Gross Pathologic & Surgical Features

                                                                      • Microscopic Features

                                                                        CLINICAL ISSUES

                                                                        • Presentation

                                                                          • Demographics

                                                                            • Natural History & Prognosis

                                                                              • Treatment

                                                                                DIAGNOSTIC CHECKLIST

                                                                                • Consider

                                                                                  Selected References

                                                                                  1. Amini B et al: Osteoid tumors of bone. Semin Ultrasound CT MR. 42(2):134-49, 2021
                                                                                  2. Wang J et al: Osteosarcoma. In Fletcher CDM et al: WHO Classification of Tumours: Tumours of Soft Tissue and Bone. IARC Press, 410-3. 2020
                                                                                  3. Ruengwanichayakun P et al: Parosteal osteosarcoma: a monocentric retrospective analysis of 195 patients. Hum Pathol. 91:11-8, 2019
                                                                                  4. Hang JF et al: Parosteal osteosarcoma. Arch Pathol Lab Med. 138(5):694-9, 2014
                                                                                  5. Shimoyama T et al: Cortical bone remodeling in parosteal osteosarcoma mimicking medullary involvement: a case with the difficulty in pre-surgical staging. Tohoku J Exp Med. 233(3):165-9, 2014
                                                                                  6. Klein MJ: Parosteal osteosarcoma dedifferentiating into telangiectatic osteosarcoma: importance of lytic changes and fluid cavities at imaging. Skeletal Radiol. 39(1):69; author reply 71, 2010
                                                                                  7. Yarmish G et al: Imaging characteristics of primary osteosarcoma: nonconventional subtypes. Radiographics. 30(6):1653-72, 2010
                                                                                  8. Azura M et al: Parosteal osteosarcoma dedifferentiating into telangiectatic osteosarcoma: importance of lytic changes and fluid cavities at imaging. Skeletal Radiol. 38(7):685-90, 2009
                                                                                  9. Cardona DM et al: Dedifferentiated parosteal osteosarcoma with giant cell tumor component. Skeletal Radiol. 37(4):367-71, 2008
                                                                                  10. Dönmez FY et al: MRI findings in parosteal osteosarcoma: correlation with histopathology. Diagn Interv Radiol. 14(3):142-52, 2008
                                                                                  11. Takeuchi K et al: Dedifferentiated parosteal osteosarcoma with well-differentiated metastases. Skeletal Radiol. 35(10):778-82, 2006
                                                                                  12. Bertoni F et al: Dedifferentiated parosteal osteosarcoma: the experience of the Rizzoli Institute. Cancer. 103(11):2373-82, 2005
                                                                                  13. Jelinek JS et al: Parosteal osteosarcoma: value of MR imaging and CT in the prediction of histologic grade. Radiology. 201(3):837-42, 1996
                                                                                  14. Murphey MD et al: The many faces of osteosarcoma. Radiographics. 17(5):1205-31, 1997
                                                                                  15. Wold LE et al: Dedifferentiated parosteal osteosarcoma. J Bone Joint Surg Am. 66(1):53-9, 1984