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Intramuscular Myxoma
B.J. Manaster, MD, PhD, FACR
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KEY FACTS

  • Imaging

    • Pathology

      • Clinical Issues

        • Diagnostic Checklist

          TERMINOLOGY

          • Definitions

            • Benign, soft tissue neoplasm with prominent myoid stroma

          IMAGING

          • General Features

            • Imaging Recommendations

              • Radiographic Findings

                • CT Findings

                  • MR Findings

                    • Ultrasonographic Findings

                      • Angiographic Findings

                        • Nuclear Medicine Findings

                          DIFFERENTIAL DIAGNOSIS

                            PATHOLOGY

                            • General Features

                              • Gross Pathologic & Surgical Features

                                • Microscopic Features

                                  CLINICAL ISSUES

                                  • Presentation

                                    • Demographics

                                      • Natural History & Prognosis

                                        • Treatment

                                          DIAGNOSTIC CHECKLIST

                                          • Image Interpretation Pearls

                                            Selected References

                                            1. Petscavage-Thomas JM et al: Soft-tissue myxomatous lesions: review of salient imaging features with pathologic comparison. Radiographics. 34(4):964-80, 2014
                                            2. Yamashita H et al: Intramuscular myxoma of the buttock mimicking low-grade fibromyxoid sarcoma: diagnostic usefulness of MUC4 expression. Skeletal Radiol. 42(10):1475-9, 2013
                                            3. Weiss SW et al: Benign soft tissue tumors and pseudotumors of uncertain type. In Weiss SW et al: Enzinger and Weiss' Soft Tissue Tumors. 5th ed. Philadelphia: Elsevier. 1066-75, 2008
                                            4. Kransdorf MJ et al: Tumors of uncertain histogenesis. In Kransdorf MJ et al: Imaging of Soft Tissue Tumors. 2nd ed. Philadelphia: Lippincott Williams & Wilkins. 485-8, 2006
                                            5. Bancroft LW et al: Intramuscular myxoma: characteristic MR imaging features. AJR Am J Roentgenol. 178(5):1255-9, 2002
                                            6. Murphey MD et al: Imaging of soft-tissue myxoma with emphasis on CT and MR and comparison of radiologic and pathologic findings. Radiology. 225(1):215-24, 2002
                                            7. Nielsen G et al: Intramuscular myxoma. In Fletcher CDM et al: World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Soft Tissue and Bone. Lyon: IARC Press. 186-7, 2002
                                            Related Anatomy
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                                            Related Differential Diagnoses
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                                            References
                                            Tables

                                            Tables

                                            KEY FACTS

                                            • Imaging

                                              • Pathology

                                                • Clinical Issues

                                                  • Diagnostic Checklist

                                                    TERMINOLOGY

                                                    • Definitions

                                                      • Benign, soft tissue neoplasm with prominent myoid stroma

                                                    IMAGING

                                                    • General Features

                                                      • Imaging Recommendations

                                                        • Radiographic Findings

                                                          • CT Findings

                                                            • MR Findings

                                                              • Ultrasonographic Findings

                                                                • Angiographic Findings

                                                                  • Nuclear Medicine Findings

                                                                    DIFFERENTIAL DIAGNOSIS

                                                                      PATHOLOGY

                                                                      • General Features

                                                                        • Gross Pathologic & Surgical Features

                                                                          • Microscopic Features

                                                                            CLINICAL ISSUES

                                                                            • Presentation

                                                                              • Demographics

                                                                                • Natural History & Prognosis

                                                                                  • Treatment

                                                                                    DIAGNOSTIC CHECKLIST

                                                                                    • Image Interpretation Pearls

                                                                                      Selected References

                                                                                      1. Petscavage-Thomas JM et al: Soft-tissue myxomatous lesions: review of salient imaging features with pathologic comparison. Radiographics. 34(4):964-80, 2014
                                                                                      2. Yamashita H et al: Intramuscular myxoma of the buttock mimicking low-grade fibromyxoid sarcoma: diagnostic usefulness of MUC4 expression. Skeletal Radiol. 42(10):1475-9, 2013
                                                                                      3. Weiss SW et al: Benign soft tissue tumors and pseudotumors of uncertain type. In Weiss SW et al: Enzinger and Weiss' Soft Tissue Tumors. 5th ed. Philadelphia: Elsevier. 1066-75, 2008
                                                                                      4. Kransdorf MJ et al: Tumors of uncertain histogenesis. In Kransdorf MJ et al: Imaging of Soft Tissue Tumors. 2nd ed. Philadelphia: Lippincott Williams & Wilkins. 485-8, 2006
                                                                                      5. Bancroft LW et al: Intramuscular myxoma: characteristic MR imaging features. AJR Am J Roentgenol. 178(5):1255-9, 2002
                                                                                      6. Murphey MD et al: Imaging of soft-tissue myxoma with emphasis on CT and MR and comparison of radiologic and pathologic findings. Radiology. 225(1):215-24, 2002
                                                                                      7. Nielsen G et al: Intramuscular myxoma. In Fletcher CDM et al: World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Soft Tissue and Bone. Lyon: IARC Press. 186-7, 2002