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Pseudosemicircular Canal Dehiscence
Bernadette L. Koch, MD; Caroline D. Robson, MBChB
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Abbreviations

              • Semicircular canal (SCC)
            • Definitions

              • Simulated dehiscence of SCC osseous wall

            IMAGING

            • General Features

              • Imaging Recommendations

                DIFFERENTIAL DIAGNOSIS

                  CLINICAL ISSUES

                  • Presentation

                    • Natural History & Prognosis

                      DIAGNOSTIC CHECKLIST

                      • Image Interpretation Pearls

                        Selected References

                        1. Allen KP et al: Superior semicircular canal dehiscence in patients with spontaneous cerebrospinal fluid otorrhea. Otolaryngol Head Neck Surg. Epub ahead of print, 2012
                        2. Dournes G et al: Pre- and postoperative CT appearance of superior semicircular canal dehiscence syndrome. Diagn Interv Imaging. 93(7-8):612-6, 2012
                        3. El Hadi T et al: Spontaneous tegmen defect and semicircular canal dehiscence: same etiopathogenic entity? Otol Neurotol. 33(4):591-5, 2012
                        4. Hagiwara M et al: Prevalence of radiographic semicircular canal dehiscence in very young children: an evaluation using high-resolution computed tomography of the temporal bones. Pediatr Radiol. Epub ahead of print, 2012
                        5. Kaski D et al: The Tullio phenomenon: a neurologically neglected presentation. J Neurol. 259(1):4-21, 2012
                        6. Manara R et al: Superior semicircular canal dehiscence: a possible pathway for intracranial spread of infection. Am J Otolaryngol. 2012 Mar;33(2):263-5. Epub 2011 Jul 23. Erratum in: Am J Otolaryngol. 33(3):377, 2012
                        7. Mondina M et al: Anatomo-radiological study of the superior semicircular canal dehiscence of 37 cadaver temporal bones. Surg Radiol Anat. Epub ahead of print, 2012
                        8. Tavassolie TS et al: Multislice computed tomography in the diagnosis of superior canal dehiscence: how much error, and how to minimize it? Otol Neurotol. 33(2):215-22, 2012
                        9. Thabet EM et al: Superior semicircular canal dehiscence syndrome as assessed by oVEMP and temporal bone computed tomography imaging. Eur Arch Otorhinolaryngol. 269(5):1545-9, 2012
                        10. Craighero F et al: [Sudden onset vertigo: imaging work-up.] J Radiol. 92(11):972-86, 2011
                        11. Erdogan N et al: Posterior semicircular canal dehiscence in asymptomatic ears. Acta Otolaryngol. 131(1):4-8, 2011
                        12. Masaki Y: The prevalence of superior canal dehiscence syndrome as assessed by temporal bone computed tomography imaging. Acta Otolaryngol. 131(3):258-62, 2011
                        13. Nadgir RN et al: Superior semicircular canal dehiscence: congenital or acquired condition? AJNR Am J Neuroradiol. 32(5):947-9, 2011
                        14. Ceylan N et al: CT imaging of superior semicircular canal dehiscence: added value of reformatted images. Acta Otolaryngol. 130(9):996-1001, 2010
                        15. Gopen Q et al: Posterior semicircular canal dehiscence: first reported case series. Otol Neurotol. 31(2):339-44, 2010
                        16. Hornibrook J et al: Bilateral superior canal dehiscence syndrome. N Z Med J. 123(1321):64-8, 2010
                        17. McCaslin DL et al: Transforming superior canal dehiscence to chronic subjective dizziness: from SCD to CSD. J Am Acad Audiol. 21(5):293-300, 2010
                        18. Arts HA et al: Reversible electrocochleographic abnormalities in superior canal dehiscence. Otol Neurotol. 30(1):79-86, 2009
                        19. Chen EY et al: Semicircular canal dehiscence in the pediatric population. Int J Pediatr Otorhinolaryngol. 73(2):321-7, 2009
                        20. Loke SC et al: Incidence of semicircular canal dehiscence in Singapore. Br J Radiol. 82(977):371-3, 2009
                        21. Yagi T et al: 3D analysis of cough-induced nystagmus in a patient with superior semicircular canal dehiscence. Auris Nasus Larynx. 36(5):590-3, 2009
                        22. Manzari L et al: Bone vibration-induced nystagmus is useful in diagnosing superior semicircular canal dehiscence. Audiol Neurootol. 13(6):379-87, 2008
                        23. Merchant SN et al: Conductive hearing loss caused by third-window lesions of the inner ear. Otol Neurotol. 29(3):282-9, 2008
                        24. Piton J et al: [Dehiscence of the superior semicircular canal: approach and CT scan classifications.] Rev Laryngol Otol Rhinol (Bord). 129(1):17-26, 2008
                        25. Zhou G et al: Clinical and diagnostic characterization of canal dehiscence syndrome: a great otologic mimicker. Otol Neurotol. 28(7):920-6, 2007
                        26. Krombach GA et al: Dehiscence of the superior and/or posterior semicircular canal: delineation on T2-weighted axial three-dimensional turbo spin-echo images, maximum intensity projections and volume-rendered images. Eur Arch Otorhinolaryngol. 263(2):111-7, 2006
                        27. Limb CJ et al: Auditory function in patients with surgically treated superior semicircular canal dehiscence. Otol Neurotol. 27(7):969-80, 2006
                        28. Watters KF et al: Superior semicircular canal dehiscence presenting as postpartum vertigo. Otol Neurotol. 27(6):756-68, 2006
                        29. Modugno G et al: Superior semicircular canal dehiscence: a series of 13 cases. ORL J Otorhinolaryngol Relat Spec. 67(3):180-4, 2005
                        30. Krombach GA et al: Semicircular canal dehiscence: comparison of T2-weighted turbo spin-echo MRI and CT. Neuroradiology. 46(4):326-31, 2004
                        31. Krombach GA et al: Posterior semicircular canal dehiscence: a morphologic cause of vertigo similar to superior semicircular canal dehiscence. Eur Radiol. 13(6):1444-50, 2003
                        32. Williamson RA et al: Coronal computed tomography prevalence of superior semicircular canal dehiscence. Otolaryngol Head Neck Surg. 129(5):481-9, 2003
                        33. Cremer PD et al: Eye movements in patients with superior canal dehiscence syndrome align with the abnormal canal. Neurology. 55(12):1833-41, 2000
                        34. 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

                            • Top Differential Diagnoses

                              • Clinical Issues

                                • Diagnostic Checklist

                                  TERMINOLOGY

                                  • Abbreviations

                                    • Semicircular canal (SCC)
                                  • Definitions

                                    • Simulated dehiscence of SCC osseous wall

                                  IMAGING

                                  • General Features

                                    • Imaging Recommendations

                                      DIFFERENTIAL DIAGNOSIS

                                        CLINICAL ISSUES

                                        • Presentation

                                          • Natural History & Prognosis

                                            DIAGNOSTIC CHECKLIST

                                            • Image Interpretation Pearls

                                              Selected References

                                              1. Allen KP et al: Superior semicircular canal dehiscence in patients with spontaneous cerebrospinal fluid otorrhea. Otolaryngol Head Neck Surg. Epub ahead of print, 2012
                                              2. Dournes G et al: Pre- and postoperative CT appearance of superior semicircular canal dehiscence syndrome. Diagn Interv Imaging. 93(7-8):612-6, 2012
                                              3. El Hadi T et al: Spontaneous tegmen defect and semicircular canal dehiscence: same etiopathogenic entity? Otol Neurotol. 33(4):591-5, 2012
                                              4. Hagiwara M et al: Prevalence of radiographic semicircular canal dehiscence in very young children: an evaluation using high-resolution computed tomography of the temporal bones. Pediatr Radiol. Epub ahead of print, 2012
                                              5. Kaski D et al: The Tullio phenomenon: a neurologically neglected presentation. J Neurol. 259(1):4-21, 2012
                                              6. Manara R et al: Superior semicircular canal dehiscence: a possible pathway for intracranial spread of infection. Am J Otolaryngol. 2012 Mar;33(2):263-5. Epub 2011 Jul 23. Erratum in: Am J Otolaryngol. 33(3):377, 2012
                                              7. Mondina M et al: Anatomo-radiological study of the superior semicircular canal dehiscence of 37 cadaver temporal bones. Surg Radiol Anat. Epub ahead of print, 2012
                                              8. Tavassolie TS et al: Multislice computed tomography in the diagnosis of superior canal dehiscence: how much error, and how to minimize it? Otol Neurotol. 33(2):215-22, 2012
                                              9. Thabet EM et al: Superior semicircular canal dehiscence syndrome as assessed by oVEMP and temporal bone computed tomography imaging. Eur Arch Otorhinolaryngol. 269(5):1545-9, 2012
                                              10. Craighero F et al: [Sudden onset vertigo: imaging work-up.] J Radiol. 92(11):972-86, 2011
                                              11. Erdogan N et al: Posterior semicircular canal dehiscence in asymptomatic ears. Acta Otolaryngol. 131(1):4-8, 2011
                                              12. Masaki Y: The prevalence of superior canal dehiscence syndrome as assessed by temporal bone computed tomography imaging. Acta Otolaryngol. 131(3):258-62, 2011
                                              13. Nadgir RN et al: Superior semicircular canal dehiscence: congenital or acquired condition? AJNR Am J Neuroradiol. 32(5):947-9, 2011
                                              14. Ceylan N et al: CT imaging of superior semicircular canal dehiscence: added value of reformatted images. Acta Otolaryngol. 130(9):996-1001, 2010
                                              15. Gopen Q et al: Posterior semicircular canal dehiscence: first reported case series. Otol Neurotol. 31(2):339-44, 2010
                                              16. Hornibrook J et al: Bilateral superior canal dehiscence syndrome. N Z Med J. 123(1321):64-8, 2010
                                              17. McCaslin DL et al: Transforming superior canal dehiscence to chronic subjective dizziness: from SCD to CSD. J Am Acad Audiol. 21(5):293-300, 2010
                                              18. Arts HA et al: Reversible electrocochleographic abnormalities in superior canal dehiscence. Otol Neurotol. 30(1):79-86, 2009
                                              19. Chen EY et al: Semicircular canal dehiscence in the pediatric population. Int J Pediatr Otorhinolaryngol. 73(2):321-7, 2009
                                              20. Loke SC et al: Incidence of semicircular canal dehiscence in Singapore. Br J Radiol. 82(977):371-3, 2009
                                              21. Yagi T et al: 3D analysis of cough-induced nystagmus in a patient with superior semicircular canal dehiscence. Auris Nasus Larynx. 36(5):590-3, 2009
                                              22. Manzari L et al: Bone vibration-induced nystagmus is useful in diagnosing superior semicircular canal dehiscence. Audiol Neurootol. 13(6):379-87, 2008
                                              23. Merchant SN et al: Conductive hearing loss caused by third-window lesions of the inner ear. Otol Neurotol. 29(3):282-9, 2008
                                              24. Piton J et al: [Dehiscence of the superior semicircular canal: approach and CT scan classifications.] Rev Laryngol Otol Rhinol (Bord). 129(1):17-26, 2008
                                              25. Zhou G et al: Clinical and diagnostic characterization of canal dehiscence syndrome: a great otologic mimicker. Otol Neurotol. 28(7):920-6, 2007
                                              26. Krombach GA et al: Dehiscence of the superior and/or posterior semicircular canal: delineation on T2-weighted axial three-dimensional turbo spin-echo images, maximum intensity projections and volume-rendered images. Eur Arch Otorhinolaryngol. 263(2):111-7, 2006
                                              27. Limb CJ et al: Auditory function in patients with surgically treated superior semicircular canal dehiscence. Otol Neurotol. 27(7):969-80, 2006
                                              28. Watters KF et al: Superior semicircular canal dehiscence presenting as postpartum vertigo. Otol Neurotol. 27(6):756-68, 2006
                                              29. Modugno G et al: Superior semicircular canal dehiscence: a series of 13 cases. ORL J Otorhinolaryngol Relat Spec. 67(3):180-4, 2005
                                              30. Krombach GA et al: Semicircular canal dehiscence: comparison of T2-weighted turbo spin-echo MRI and CT. Neuroradiology. 46(4):326-31, 2004
                                              31. Krombach GA et al: Posterior semicircular canal dehiscence: a morphologic cause of vertigo similar to superior semicircular canal dehiscence. Eur Radiol. 13(6):1444-50, 2003
                                              32. Williamson RA et al: Coronal computed tomography prevalence of superior semicircular canal dehiscence. Otolaryngol Head Neck Surg. 129(5):481-9, 2003
                                              33. Cremer PD et al: Eye movements in patients with superior canal dehiscence syndrome align with the abnormal canal. Neurology. 55(12):1833-41, 2000
                                              34. 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