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Morel-Lavallée Lesion
A. Carlson Merrow, Jr., MD, FAAP
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KEY FACTS

  • Terminology

    • Imaging

      • Pathology

        • Clinical Issues

          TERMINOLOGY

          • Synonyms

            • Fat fracture, fat shearing injury, posttraumatic pseudocyst, chronic expanding hematoma
          • Definitions

            • Closed degloving injury of subcutaneous fat at interface with fascia
            • Results in chronic fluid collection (blood, lymph, necrotic fat)

          IMAGING

          • General Features

            • Ultrasonographic Findings

              • MR Findings

                • CT Findings

                  DIFFERENTIAL DIAGNOSIS

                    PATHOLOGY

                    • General Features

                      • Gross Pathologic & Surgical Features

                        CLINICAL ISSUES

                        • Presentation

                          • Natural History & Prognosis

                            • Treatment

                              Selected References

                              1. Hussein K et al: Pictorial review of Morel-Lavallée lesions. J Med Imaging Radiat Oncol. 63(2):212-5, 2019
                              2. Singh R et al: The Morel-Lavallée lesion and its management: a review of the literature. J Orthop. 15(4):917-21, 2018
                              3. Diviti S et al: Morel-Lavallee lesions-review of pathophysiology, clinical findings, imaging findings and management. J Clin Diagn Res. 11(4):TE01-4, 2017
                              4. Spain JA et al: Morel-Lavallée injuries: a multimodality approach to imaging characteristics. Acad Radiol. 24(2):220-5, 2017
                              5. Greenhill D et al: Management of the Morel-Lavallée lesion. Orthop Clin North Am. 47(1):115-25, 2016
                              6. Khodaee M et al: Morel-Lavallée lesion in sports. Curr Sports Med Rep. 15(6):417-22, 2016
                              7. Bonilla-Yoon I et al: The Morel-Lavallée lesion: pathophysiology, clinical presentation, imaging features, and treatment options. Emerg Radiol. 21(1):35-43, 2014
                              8. Rha EY et al: Morel-Lavallée lesion in children. World J Emerg Surg. 8(1):60, 2013
                              9. Shen C et al: Efficacy of treatment in peri-pelvic Morel-Lavallée lesion: a systematic review of the literature. Arch Orthop Trauma Surg. 133(5):635-40, 2013
                              10. van Gennip S et al: Pain at the knee: the Morel-Lavallée lesion, a case series. Clin J Sport Med. 22(2):163-6, 2012
                              11. Neal C et al: Sonography of Morel-Lavallée lesions. J Ultrasound Med. 27(7):1077-81, 2008
                              12. Mellado JM et al: Morel-Lavallée lesion: review with emphasis on MR imaging. Magn Reson Imaging Clin N Am. 13(4):775-82, 2005
                              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

                                        • Fat fracture, fat shearing injury, posttraumatic pseudocyst, chronic expanding hematoma
                                      • Definitions

                                        • Closed degloving injury of subcutaneous fat at interface with fascia
                                        • Results in chronic fluid collection (blood, lymph, necrotic fat)

                                      IMAGING

                                      • General Features

                                        • Ultrasonographic Findings

                                          • MR Findings

                                            • CT Findings

                                              DIFFERENTIAL DIAGNOSIS

                                                PATHOLOGY

                                                • General Features

                                                  • Gross Pathologic & Surgical Features

                                                    CLINICAL ISSUES

                                                    • Presentation

                                                      • Natural History & Prognosis

                                                        • Treatment

                                                          Selected References

                                                          1. Hussein K et al: Pictorial review of Morel-Lavallée lesions. J Med Imaging Radiat Oncol. 63(2):212-5, 2019
                                                          2. Singh R et al: The Morel-Lavallée lesion and its management: a review of the literature. J Orthop. 15(4):917-21, 2018
                                                          3. Diviti S et al: Morel-Lavallee lesions-review of pathophysiology, clinical findings, imaging findings and management. J Clin Diagn Res. 11(4):TE01-4, 2017
                                                          4. Spain JA et al: Morel-Lavallée injuries: a multimodality approach to imaging characteristics. Acad Radiol. 24(2):220-5, 2017
                                                          5. Greenhill D et al: Management of the Morel-Lavallée lesion. Orthop Clin North Am. 47(1):115-25, 2016
                                                          6. Khodaee M et al: Morel-Lavallée lesion in sports. Curr Sports Med Rep. 15(6):417-22, 2016
                                                          7. Bonilla-Yoon I et al: The Morel-Lavallée lesion: pathophysiology, clinical presentation, imaging features, and treatment options. Emerg Radiol. 21(1):35-43, 2014
                                                          8. Rha EY et al: Morel-Lavallée lesion in children. World J Emerg Surg. 8(1):60, 2013
                                                          9. Shen C et al: Efficacy of treatment in peri-pelvic Morel-Lavallée lesion: a systematic review of the literature. Arch Orthop Trauma Surg. 133(5):635-40, 2013
                                                          10. van Gennip S et al: Pain at the knee: the Morel-Lavallée lesion, a case series. Clin J Sport Med. 22(2):163-6, 2012
                                                          11. Neal C et al: Sonography of Morel-Lavallée lesions. J Ultrasound Med. 27(7):1077-81, 2008
                                                          12. Mellado JM et al: Morel-Lavallée lesion: review with emphasis on MR imaging. Magn Reson Imaging Clin N Am. 13(4):775-82, 2005