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Semicircular Canal Dehiscence
Troy A. Hutchins, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Pathology

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Abbreviations

              • Semicircular canal dehiscence (SCCD)
            • Definitions

              • Extreme thinning or absence of bony roof over superior or posterior semicircular canal

            IMAGING

            • General Features

              • CT Findings

                • MR Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Gross Pathologic & Surgical Features

                          CLINICAL ISSUES

                          • Presentation

                            • Demographics

                              • Natural History & Prognosis

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Consider

                                    • Image Interpretation Pearls

                                      Selected References

                                      1. Klopp-Dutote N et al: A radiologic and anatomic study of the superior semicircular canal. Eur Ann Otorhinolaryngol Head Neck Dis. 133(2):91-4, 2016
                                      2. Spear SA et al: Is MRI Equal to CT in the Evaluation of Thin and Dehiscent Superior Semicircular Canals? Otol Neurotol. 37(2):167-70, 2016
                                      3. Chilvers G et al: Recent advances in superior semicircular canal dehiscence syndrome. J Laryngol Otol. 129(3):217-25, 2015
                                      4. Browaeys P et al: Can MRI replace CT in evaluating semicircular canal dehiscence? AJNR Am J Neuroradiol. 34(7):1421-7, 2013
                                      5. Ceylan N et al: CT imaging of superior semicircular canal dehiscence: added value of reformatted images. Acta Otolaryngol. Epub ahead of print, 2010
                                      6. Cloutier JF et al: Superior semicircular canal dehiscence: positive predictive value of high-resolution CT scanning. Eur Arch Otorhinolaryngol. 265(12):1455-60, 2008
                                      7. Krombach GA et al: Semicircular canal dehiscence: comparison of T2-weighted turbo spin-echo MRI and CT. Neuroradiology. 46(4):326-31, 2004
                                      8. Williamson RA et al: Coronal computed tomography prevalence of superior semicircular canal dehiscence. Otolaryngol Head Neck Surg. 129(5):481-9, 2003
                                      9. Minor LB: Superior canal dehiscence syndrome. Am J Otol. 21(1):9-19, 2000
                                      10. Mong A et al: Sound- and pressure-induced vertigo associated with dehiscence of the roof of the superior semicircular canal. AJNR Am J Neuroradiol. 20(10):1973-5, 1999
                                      Related Anatomy
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                                      Related Differential Diagnoses
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                                      References
                                      Tables

                                      Tables

                                      KEY FACTS

                                      • Terminology

                                        • Imaging

                                          • Pathology

                                            • Clinical Issues

                                              • Diagnostic Checklist

                                                TERMINOLOGY

                                                • Abbreviations

                                                  • Semicircular canal dehiscence (SCCD)
                                                • Definitions

                                                  • Extreme thinning or absence of bony roof over superior or posterior semicircular canal

                                                IMAGING

                                                • General Features

                                                  • CT Findings

                                                    • MR Findings

                                                      • Imaging Recommendations

                                                        DIFFERENTIAL DIAGNOSIS

                                                          PATHOLOGY

                                                          • General Features

                                                            • Gross Pathologic & Surgical Features

                                                              CLINICAL ISSUES

                                                              • Presentation

                                                                • Demographics

                                                                  • Natural History & Prognosis

                                                                    • Treatment

                                                                      DIAGNOSTIC CHECKLIST

                                                                      • Consider

                                                                        • Image Interpretation Pearls

                                                                          Selected References

                                                                          1. Klopp-Dutote N et al: A radiologic and anatomic study of the superior semicircular canal. Eur Ann Otorhinolaryngol Head Neck Dis. 133(2):91-4, 2016
                                                                          2. Spear SA et al: Is MRI Equal to CT in the Evaluation of Thin and Dehiscent Superior Semicircular Canals? Otol Neurotol. 37(2):167-70, 2016
                                                                          3. Chilvers G et al: Recent advances in superior semicircular canal dehiscence syndrome. J Laryngol Otol. 129(3):217-25, 2015
                                                                          4. Browaeys P et al: Can MRI replace CT in evaluating semicircular canal dehiscence? AJNR Am J Neuroradiol. 34(7):1421-7, 2013
                                                                          5. Ceylan N et al: CT imaging of superior semicircular canal dehiscence: added value of reformatted images. Acta Otolaryngol. Epub ahead of print, 2010
                                                                          6. Cloutier JF et al: Superior semicircular canal dehiscence: positive predictive value of high-resolution CT scanning. Eur Arch Otorhinolaryngol. 265(12):1455-60, 2008
                                                                          7. Krombach GA et al: Semicircular canal dehiscence: comparison of T2-weighted turbo spin-echo MRI and CT. Neuroradiology. 46(4):326-31, 2004
                                                                          8. Williamson RA et al: Coronal computed tomography prevalence of superior semicircular canal dehiscence. Otolaryngol Head Neck Surg. 129(5):481-9, 2003
                                                                          9. Minor LB: Superior canal dehiscence syndrome. Am J Otol. 21(1):9-19, 2000
                                                                          10. Mong A et al: Sound- and pressure-induced vertigo associated with dehiscence of the roof of the superior semicircular canal. AJNR Am J Neuroradiol. 20(10):1973-5, 1999