Extreme thinning or absence of bone roof over superior or posterior semicircular canal (SCC)
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
Chari DA et al: Radiologically-proven new development of superior semicircular canal dehiscence associated with development of superior semicircular canal dehiscence syndrome. Otol Neurotol. 42(2):285-9, 2021
Ionescu E et al: Superior semicircular canal dehiscence by superior petrosal sinus: proposal for classification. J Int Adv Otol. 17(1):35-41, 2021
Arsenault JJ et al: Thinning or dehiscence of bone in structures of the middle cranial fossa floor in superior semicircular canal dehiscence. J Clin Neurosci. 74:104-8, 2020
Cozart AC et al: A basis for standardizing superior semicircular canal dehiscence management. Ear Nose Throat J. 145561320927941, 2020
Duman IS et al: Contribution of reformatted multislice temporal computed tomography images in the planes of Stenvers and Pöschl to the diagnosis of superior semicircular canal dehiscence. J Comput Assist Tomogr. 44(1):53-8, 2020
Lee JA et al: Posterior semicircular canal dehiscence: case series and systematic review. Otol Neurotol. 41(4):511-21, 2020
McClellan J et al: Stapes surgery outcomes in patients with concurrent otosclerosis and superior semicircular canal dehiscence. Otol Neurotol. 41(7):912-5, 2020
Ray A et al: MRI contribution for the detection of endolymphatic hydrops in patients with superior canal dehiscence syndrome. Eur Arch Otorhinolaryngol. 278(7):2229-38, 2020
Tikka T et al: Temporal bone anatomy in superior semicircular canal dehiscence: a case control study on bone pneumatization and the level of middle cranial fossa. Otol Neurotol. 41(3):e334-41, 2020
Berning AW et al: Prevalence of superior semicircular canal dehiscence on high-resolution CT imaging in patients without vestibular or auditory abnormalities. AJNR Am J Neuroradiol. 40(4):709-12, 2019
Preet K et al: Bilateral superior semicircular canal dehiscence associated with Ehlers-Danlos syndrome: a report of 2 cases. World Neurosurg. 122:161-4, 2019
Whyte J et al: Association between superior semicircular canal dehiscence and other dehiscences in temporal bone. Folia Morphol (Warsz). 79(4):823-8, 2019
Heidenreich KD et al: Superior canal dehiscence syndrome affecting 3 families. JAMA Otolaryngol Head Neck Surg. 143(7):656-62, 2017
Ho ML et al: Spectrum of third window abnormalities: semicircular canal dehiscence and beyond. AJNR Am J Neuroradiol. 38(1):2-9, 2017
Sparacia G et al: Diagnostic performance of reformatted isotropic thin-section helical CT images in the detection of superior semicircular canal dehiscence. Neuroradiol J. 30(3):216-21, 2017
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
Noonan KY et al: CDH23 related hearing loss: a new genetic risk factor for semicircular canal dehiscence? Otol Neurotol. 37(10):1583-8, 2016
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
Chilvers G et al: Recent advances in superior semicircular canal dehiscence syndrome. J Laryngol Otol. 129(3):217-25, 2015
Liu Z et al: Superior semicircular canal dehiscence in relation to the superior petrosal sinus: a potential cause of pulsatile tinnitus. Clin Radiol. 70(9):943-7, 2015
Browaeys P et al: Can MRI replace CT in evaluating semicircular canal dehiscence? AJNR Am J Neuroradiol. 34(7):1421-7, 2013
Ceylan N et al: CT imaging of superior semicircular canal dehiscence: added value of reformatted images. Acta Otolaryngol. 130(9):996-1001, 2010
Cloutier JF et al: Superior semicircular canal dehiscence: positive predictive value of high-resolution CT scanning. Eur Arch Otorhinolaryngol. 265(12):1455-60, 2008
Krombach GA et al: Semicircular canal dehiscence: comparison of T2-weighted turbo spin-echo MRI and CT. Neuroradiology. 46(4):326-31, 2004
Williamson RA et al: Coronal computed tomography prevalence of superior semicircular canal dehiscence. Otolaryngol Head Neck Surg. 129(5):481-9, 2003
Minor LB: Superior canal dehiscence syndrome. Am J Otol. 21(1):9-19, 2000
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
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References
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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 bone roof over superior or posterior semicircular canal (SCC)
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
Chari DA et al: Radiologically-proven new development of superior semicircular canal dehiscence associated with development of superior semicircular canal dehiscence syndrome. Otol Neurotol. 42(2):285-9, 2021
Ionescu E et al: Superior semicircular canal dehiscence by superior petrosal sinus: proposal for classification. J Int Adv Otol. 17(1):35-41, 2021
Arsenault JJ et al: Thinning or dehiscence of bone in structures of the middle cranial fossa floor in superior semicircular canal dehiscence. J Clin Neurosci. 74:104-8, 2020
Cozart AC et al: A basis for standardizing superior semicircular canal dehiscence management. Ear Nose Throat J. 145561320927941, 2020
Duman IS et al: Contribution of reformatted multislice temporal computed tomography images in the planes of Stenvers and Pöschl to the diagnosis of superior semicircular canal dehiscence. J Comput Assist Tomogr. 44(1):53-8, 2020
Lee JA et al: Posterior semicircular canal dehiscence: case series and systematic review. Otol Neurotol. 41(4):511-21, 2020
McClellan J et al: Stapes surgery outcomes in patients with concurrent otosclerosis and superior semicircular canal dehiscence. Otol Neurotol. 41(7):912-5, 2020
Ray A et al: MRI contribution for the detection of endolymphatic hydrops in patients with superior canal dehiscence syndrome. Eur Arch Otorhinolaryngol. 278(7):2229-38, 2020
Tikka T et al: Temporal bone anatomy in superior semicircular canal dehiscence: a case control study on bone pneumatization and the level of middle cranial fossa. Otol Neurotol. 41(3):e334-41, 2020
Berning AW et al: Prevalence of superior semicircular canal dehiscence on high-resolution CT imaging in patients without vestibular or auditory abnormalities. AJNR Am J Neuroradiol. 40(4):709-12, 2019
Preet K et al: Bilateral superior semicircular canal dehiscence associated with Ehlers-Danlos syndrome: a report of 2 cases. World Neurosurg. 122:161-4, 2019
Whyte J et al: Association between superior semicircular canal dehiscence and other dehiscences in temporal bone. Folia Morphol (Warsz). 79(4):823-8, 2019
Heidenreich KD et al: Superior canal dehiscence syndrome affecting 3 families. JAMA Otolaryngol Head Neck Surg. 143(7):656-62, 2017
Ho ML et al: Spectrum of third window abnormalities: semicircular canal dehiscence and beyond. AJNR Am J Neuroradiol. 38(1):2-9, 2017
Sparacia G et al: Diagnostic performance of reformatted isotropic thin-section helical CT images in the detection of superior semicircular canal dehiscence. Neuroradiol J. 30(3):216-21, 2017
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
Noonan KY et al: CDH23 related hearing loss: a new genetic risk factor for semicircular canal dehiscence? Otol Neurotol. 37(10):1583-8, 2016
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
Chilvers G et al: Recent advances in superior semicircular canal dehiscence syndrome. J Laryngol Otol. 129(3):217-25, 2015
Liu Z et al: Superior semicircular canal dehiscence in relation to the superior petrosal sinus: a potential cause of pulsatile tinnitus. Clin Radiol. 70(9):943-7, 2015
Browaeys P et al: Can MRI replace CT in evaluating semicircular canal dehiscence? AJNR Am J Neuroradiol. 34(7):1421-7, 2013
Ceylan N et al: CT imaging of superior semicircular canal dehiscence: added value of reformatted images. Acta Otolaryngol. 130(9):996-1001, 2010
Cloutier JF et al: Superior semicircular canal dehiscence: positive predictive value of high-resolution CT scanning. Eur Arch Otorhinolaryngol. 265(12):1455-60, 2008
Krombach GA et al: Semicircular canal dehiscence: comparison of T2-weighted turbo spin-echo MRI and CT. Neuroradiology. 46(4):326-31, 2004
Williamson RA et al: Coronal computed tomography prevalence of superior semicircular canal dehiscence. Otolaryngol Head Neck Surg. 129(5):481-9, 2003
Minor LB: Superior canal dehiscence syndrome. Am J Otol. 21(1):9-19, 2000
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
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