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Table 1 Clinical presentation, MRI and HRCT findings of 9 patients who underwent first-line MRI and ultimately confirmed as otosclerosis on subsequent HRCT

From: Role of MRI as first-line modality in the detection of previously undiagnosed otosclerosis: a single tertiary institute experience

Case number/sex/ageClinical/audiometric presentationPreliminary MRI findingsInterval between MRI and HRCTSubsequent HRCT findingsCorrelation between MRI and HRCT findings
1/F/43Asymmetric (R) SNHLIntermediate T1 signal and PCE in (B/L) FA regions + pericochlear regions1 monthB/L fenestral and pericochlear hypodense plaquesMRI findings closely match HRCT
2/M/28Asymmetric (L) SNHLReported normal4 monthsB/L fenestral hypodense plaques. No pericochlear diseaseOtosclerosis missed on MRI at first read. Retrospective evaluation showed very subtle focal PCE in (B/L) FA
3/F/57Asymmetric (L) SNHLIntermediate T1 signal and PCE in (B/L) FA + pericochlear regions. Also enhancement around (B/L) SCC2 weeksB/L fenestral and pericochlear hypodense plaques. Also extensive plaques around B/L SCCMRI findings closely match HRCT
4/M/41Asymmetric (L) SNHLIntermediate T1 signal and PCE at bilateral FA + (R) pericochlear region1 monthB/L fenestral and pericochlear hypodense plaques.
(R) OW occluded, (L) OW narrowed
(L) pericochlear disease not detected on MRI
5/M/47(B/L) heavy SNHLIntermediate T1 signal and PCE in (B/L) FA + pericochlear regions18 monthsB/L fenestral and pericochlear hypodense plaquesMRI findings closely match HRCT
6/M/61Asymmetric (L) SNHLIntermediate T1 signal and PCE in (B/L) FA + pericochlear regions. Also T2 hyperintensity in (B/L) pericochlear regions2 monthsB/L fenestral and pericochlear hypodense plaques.
(L) RW obliterated
MRI findings closely match HRCT
7/M/64(B/L) heavy SNHLIntermediate T1 signal and PCE in (B/L) FA + pericochlear regions. Also T2 hyperintensity in (B/L) pericochlear regions. Right IAC diverticulum1 weekB/L fenestral and pericochlear hypodense plaques
Right IAC diverticulum
MRI findings closely match HRCT
8/M/46(R) MHLIntermediate T1 signal and PCE in (B/L) FA + pericochlear regions1 monthB/L fenestral and pericochlear hypodense plaques.
(R) OW obliterated
MRI findings closely match HRCT
9/F/61(B/L) heavy SNHLIntermediate T1 signal and PCE in (B/L) FA + pericochlear regions. Possible tiny (R) IAC diverticulum1 monthB/L fenestral and pericochlear hypodense plaques.
Right IAC diverticulum
MRI findings closely match HRCT
  1. (R) right, (L) left, (U/L) unilateral, (B/L) bilateral, FA fissula antefenestram, OW oval window, RW round window, PCE post-contrast enhancement, IAC internal auditory canal