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Lipoma Arborescens: Knee
Catherine C. Roberts, MD; B.J. Manaster, MD, PhD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Pathology

        • Clinical Issues

          TERMINOLOGY

          • Synonyms

            • Diffuse synovial lipoma
            • Villous lipomatous proliferation of synovial membrane
          • Definitions

            • Infiltration of fat tissue in synovium and subsynovial tissue forming frond-like masses

          IMAGING

          • General Features

            • Radiographic Findings

              • CT Findings

                • MR Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Gross Pathologic & Surgical Features

                          • Microscopic Features

                            CLINICAL ISSUES

                            • Presentation

                              • Demographics

                                • Natural History & Prognosis

                                  • Treatment

                                    DIAGNOSTIC CHECKLIST

                                    • Consider

                                      • Image Interpretation Pearls

                                        Selected References

                                        1. White EA et al: Lipoma arborescens of the biceps tendon sheath. Skeletal Radiol. 42(10):1461-4, 2013
                                        2. Coll JP et al: Best cases from the AFIP: lipoma arborescens of the knees in a patient with rheumatoid arthritis. Radiographics. 31(2):333-7, 2011
                                        3. Chae EY et al: Lipoma arborescens of the glenohumeral joint causing bone erosion: MRI features with gadolinium enhancement. Skeletal Radiol. 38(8):815-8, 2009
                                        4. Weiss SW et al: Benign lipomatous tumors. In Weiss SW et al: Enzinger and Weiss' Soft Tissue Tumors. 5th ed. Philadelphia: Elsevier. 458-9, 2008
                                        5. Vinson EN et al: Synovial lipomatosis arborescens of the peroneal tendon sheath. Skeletal Radiol. 37(10):947-50, 2008
                                        6. Murphey MD et al: From the archives of the AFIP: benign musculoskeletal lipomatous lesions. Radiographics. 24(5):1433-66, 2004
                                        Related Anatomy
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                                        Related Differential Diagnoses
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                                        References
                                        Tables

                                        Tables

                                        KEY FACTS

                                        • Terminology

                                          • Imaging

                                            • Pathology

                                              • Clinical Issues

                                                TERMINOLOGY

                                                • Synonyms

                                                  • Diffuse synovial lipoma
                                                  • Villous lipomatous proliferation of synovial membrane
                                                • Definitions

                                                  • Infiltration of fat tissue in synovium and subsynovial tissue forming frond-like masses

                                                IMAGING

                                                • General Features

                                                  • Radiographic Findings

                                                    • CT Findings

                                                      • MR Findings

                                                        • Imaging Recommendations

                                                          DIFFERENTIAL DIAGNOSIS

                                                            PATHOLOGY

                                                            • General Features

                                                              • Gross Pathologic & Surgical Features

                                                                • Microscopic Features

                                                                  CLINICAL ISSUES

                                                                  • Presentation

                                                                    • Demographics

                                                                      • Natural History & Prognosis

                                                                        • Treatment

                                                                          DIAGNOSTIC CHECKLIST

                                                                          • Consider

                                                                            • Image Interpretation Pearls

                                                                              Selected References

                                                                              1. White EA et al: Lipoma arborescens of the biceps tendon sheath. Skeletal Radiol. 42(10):1461-4, 2013
                                                                              2. Coll JP et al: Best cases from the AFIP: lipoma arborescens of the knees in a patient with rheumatoid arthritis. Radiographics. 31(2):333-7, 2011
                                                                              3. Chae EY et al: Lipoma arborescens of the glenohumeral joint causing bone erosion: MRI features with gadolinium enhancement. Skeletal Radiol. 38(8):815-8, 2009
                                                                              4. Weiss SW et al: Benign lipomatous tumors. In Weiss SW et al: Enzinger and Weiss' Soft Tissue Tumors. 5th ed. Philadelphia: Elsevier. 458-9, 2008
                                                                              5. Vinson EN et al: Synovial lipomatosis arborescens of the peroneal tendon sheath. Skeletal Radiol. 37(10):947-50, 2008
                                                                              6. Murphey MD et al: From the archives of the AFIP: benign musculoskeletal lipomatous lesions. Radiographics. 24(5):1433-66, 2004