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Levator Scapulae Muscle Hypertrophy
C. Douglas Phillips, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            • Diagnostic Checklist

              TERMINOLOGY

              • Abbreviations

                • Levator scapulae muscle hypertrophy (LSMH)
              • Definitions

                • CNXI (spinal accessory nerve) injury causes denervation atrophy of ipsilateral trapezius and sternocleidomastoid (SCM) muscles
                • LSMH: Functional hypertrophy of levator scapulae muscle (LSM) in response to trapezius and SCM muscle atrophy

              IMAGING

              • General Features

                • Radiographic Findings

                  • CT Findings

                    • MR Findings

                      • Imaging Recommendations

                        DIFFERENTIAL DIAGNOSIS

                          PATHOLOGY

                          • General Features

                            CLINICAL ISSUES

                            • Presentation

                              • Demographics

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Consider

                                    • Image Interpretation Pearls

                                      Selected References

                                      1. Shpizner BA et al: Levator scapulae muscle asymmetry presenting as a palpable neck mass: CT evaluation. AJNR Am J Neuroradiol. 14(2):461-4, 1993
                                      Related Anatomy
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                                      Related Differential Diagnoses
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                                      References
                                      Tables

                                      Tables

                                      KEY FACTS

                                      • Terminology

                                        • Imaging

                                          • Top Differential Diagnoses

                                            • Pathology

                                              • Clinical Issues

                                                • Diagnostic Checklist

                                                  TERMINOLOGY

                                                  • Abbreviations

                                                    • Levator scapulae muscle hypertrophy (LSMH)
                                                  • Definitions

                                                    • CNXI (spinal accessory nerve) injury causes denervation atrophy of ipsilateral trapezius and sternocleidomastoid (SCM) muscles
                                                    • LSMH: Functional hypertrophy of levator scapulae muscle (LSM) in response to trapezius and SCM muscle atrophy

                                                  IMAGING

                                                  • General Features

                                                    • Radiographic Findings

                                                      • CT Findings

                                                        • MR Findings

                                                          • Imaging Recommendations

                                                            DIFFERENTIAL DIAGNOSIS

                                                              PATHOLOGY

                                                              • General Features

                                                                CLINICAL ISSUES

                                                                • Presentation

                                                                  • Demographics

                                                                    • Treatment

                                                                      DIAGNOSTIC CHECKLIST

                                                                      • Consider

                                                                        • Image Interpretation Pearls

                                                                          Selected References

                                                                          1. Shpizner BA et al: Levator scapulae muscle asymmetry presenting as a palpable neck mass: CT evaluation. AJNR Am J Neuroradiol. 14(2):461-4, 1993