Presentation
Left sided hearing loss.
Patient Data
Age: Adult
{"study":{"id":7316,"case_slug":"fenestral-otosclerosis-5","modality":"CT","series":[{"id":22790,"content_type":"image/jpeg","frames":[{"id":22787,"width":1534,"height":1487},{"id":22788},{"id":22789},{"id":22790,"current":true},{"id":22791},{"id":22792}],"annotations":[],"encodings":{"original_dicom":null,"video":null,"thumbnailed_files":[{"tiny":"ec156f49bc2ebd249cd31c29a76259_tiny.jpeg","jumbo":"ec156f49bc2ebd249cd31c29a76259_jumbo.jpeg","small":"ec156f49bc2ebd249cd31c29a76259_small.jpeg","thumb":"ec156f49bc2ebd249cd31c29a76259_thumb.jpeg","medium":"ec156f49bc2ebd249cd31c29a76259_medium.jpeg","gallery":"ec156f49bc2ebd249cd31c29a76259_gallery.jpeg","big_gallery":"ec156f49bc2ebd249cd31c29a76259_big_gallery.jpeg","original":"ec156f49bc2ebd249cd31c29a76259.jpg"},{"tiny":"2fc98caae5c7478bbfa51f01eb3965_tiny.jpeg","jumbo":"2fc98caae5c7478bbfa51f01eb3965_jumbo.jpeg","small":"2fc98caae5c7478bbfa51f01eb3965_small.jpeg","thumb":"2fc98caae5c7478bbfa51f01eb3965_thumb.jpeg","medium":"2fc98caae5c7478bbfa51f01eb3965_medium.jpeg","gallery":"2fc98caae5c7478bbfa51f01eb3965_gallery.jpeg","big_gallery":"2fc98caae5c7478bbfa51f01eb3965_big_gallery.jpeg","original":"2fc98caae5c7478bbfa51f01eb3965.jpg"},{"tiny":"199c8eec875fe54aa7916ad314f40c_tiny.jpeg","jumbo":"199c8eec875fe54aa7916ad314f40c_jumbo.jpeg","small":"199c8eec875fe54aa7916ad314f40c_small.jpeg","thumb":"199c8eec875fe54aa7916ad314f40c_thumb.jpeg","medium":"199c8eec875fe54aa7916ad314f40c_medium.jpeg","gallery":"199c8eec875fe54aa7916ad314f40c_gallery.jpeg","big_gallery":"199c8eec875fe54aa7916ad314f40c_big_gallery.jpeg","original":"199c8eec875fe54aa7916ad314f40c.jpg"},{"tiny":"e1b4236cda167f20befce0d2127285_tiny.jpeg","jumbo":"e1b4236cda167f20befce0d2127285_jumbo.jpeg","small":"e1b4236cda167f20befce0d2127285_small.jpeg","thumb":"e1b4236cda167f20befce0d2127285_thumb.jpeg","medium":"e1b4236cda167f20befce0d2127285_medium.jpeg","gallery":"e1b4236cda167f20befce0d2127285_gallery.jpeg","big_gallery":"e1b4236cda167f20befce0d2127285_big_gallery.jpeg","original":"e1b4236cda167f20befce0d2127285.jpg"},{"tiny":"c0459ee9909e8f697bab3fdfdac37f_tiny.jpeg","jumbo":"c0459ee9909e8f697bab3fdfdac37f_jumbo.jpeg","small":"c0459ee9909e8f697bab3fdfdac37f_small.jpeg","thumb":"c0459ee9909e8f697bab3fdfdac37f_thumb.jpeg","medium":"c0459ee9909e8f697bab3fdfdac37f_medium.jpeg","gallery":"c0459ee9909e8f697bab3fdfdac37f_gallery.jpeg","big_gallery":"c0459ee9909e8f697bab3fdfdac37f_big_gallery.jpeg","original":"c0459ee9909e8f697bab3fdfdac37f.jpg"},{"tiny":"ff74cd6462fc7c82e858402d170812_tiny.jpeg","jumbo":"ff74cd6462fc7c82e858402d170812_jumbo.jpeg","small":"ff74cd6462fc7c82e858402d170812_small.jpeg","thumb":"ff74cd6462fc7c82e858402d170812_thumb.jpeg","medium":"ff74cd6462fc7c82e858402d170812_medium.jpeg","gallery":"ff74cd6462fc7c82e858402d170812_gallery.jpeg","big_gallery":"ff74cd6462fc7c82e858402d170812_big_gallery.jpeg","original":"ff74cd6462fc7c82e858402d170812.jpg"}]},"perspective":"Axial","specifics":"bone window"},{"id":22798,"content_type":"image/jpeg","frames":[{"id":22793,"width":1534,"height":1487},{"id":22794},{"id":22795},{"id":22796},{"id":22797},{"id":22798,"current":true},{"id":22799},{"id":22800},{"id":22801},{"id":22802}],"annotations":[],"encodings":{"original_dicom":null,"video":null,"thumbnailed_files":[{"tiny":"d777fcc974e1b383cc3a8a225e4b41_tiny.jpeg","jumbo":"d777fcc974e1b383cc3a8a225e4b41_jumbo.jpeg","small":"d777fcc974e1b383cc3a8a225e4b41_small.jpeg","thumb":"d777fcc974e1b383cc3a8a225e4b41_thumb.jpeg","medium":"d777fcc974e1b383cc3a8a225e4b41_medium.jpeg","gallery":"d777fcc974e1b383cc3a8a225e4b41_gallery.jpeg","big_gallery":"d777fcc974e1b383cc3a8a225e4b41_big_gallery.jpeg","original":"d777fcc974e1b383cc3a8a225e4b41.jpg"},{"tiny":"f0af21ada686a161c798b795c01330_tiny.jpeg","jumbo":"f0af21ada686a161c798b795c01330_jumbo.jpeg","small":"f0af21ada686a161c798b795c01330_small.jpeg","thumb":"f0af21ada686a161c798b795c01330_thumb.jpeg","medium":"f0af21ada686a161c798b795c01330_medium.jpeg","gallery":"f0af21ada686a161c798b795c01330_gallery.jpeg","big_gallery":"f0af21ada686a161c798b795c01330_big_gallery.jpeg","original":"f0af21ada686a161c798b795c01330.jpg"},{"tiny":"38bfd74041ac3201195caea68dfff4_tiny.jpeg","jumbo":"38bfd74041ac3201195caea68dfff4_jumbo.jpeg","small":"38bfd74041ac3201195caea68dfff4_small.jpeg","thumb":"38bfd74041ac3201195caea68dfff4_thumb.jpeg","medium":"38bfd74041ac3201195caea68dfff4_medium.jpeg","gallery":"38bfd74041ac3201195caea68dfff4_gallery.jpeg","big_gallery":"38bfd74041ac3201195caea68dfff4_big_gallery.jpeg","original":"38bfd74041ac3201195caea68dfff4.jpg"},{"tiny":"f74fded4df52a7870c1dc917453554_tiny.jpeg","jumbo":"f74fded4df52a7870c1dc917453554_jumbo.jpeg","small":"f74fded4df52a7870c1dc917453554_small.jpeg","thumb":"f74fded4df52a7870c1dc917453554_thumb.jpeg","medium":"f74fded4df52a7870c1dc917453554_medium.jpeg","gallery":"f74fded4df52a7870c1dc917453554_gallery.jpeg","big_gallery":"f74fded4df52a7870c1dc917453554_big_gallery.jpeg","original":"f74fded4df52a7870c1dc917453554.jpg"},{"tiny":"4ffe8cac89cbabf46db02f9a59be11_tiny.jpeg","jumbo":"4ffe8cac89cbabf46db02f9a59be11_jumbo.jpeg","small":"4ffe8cac89cbabf46db02f9a59be11_small.jpeg","thumb":"4ffe8cac89cbabf46db02f9a59be11_thumb.jpeg","medium":"4ffe8cac89cbabf46db02f9a59be11_medium.jpeg","gallery":"4ffe8cac89cbabf46db02f9a59be11_gallery.jpeg","big_gallery":"4ffe8cac89cbabf46db02f9a59be11_big_gallery.jpeg","original":"4ffe8cac89cbabf46db02f9a59be11.jpg"},{"tiny":"aab77acdce3b4273489b5f0f56d435_tiny.jpeg","jumbo":"aab77acdce3b4273489b5f0f56d435_jumbo.jpeg","small":"aab77acdce3b4273489b5f0f56d435_small.jpeg","thumb":"aab77acdce3b4273489b5f0f56d435_thumb.jpeg","medium":"aab77acdce3b4273489b5f0f56d435_medium.jpeg","gallery":"aab77acdce3b4273489b5f0f56d435_gallery.jpeg","big_gallery":"aab77acdce3b4273489b5f0f56d435_big_gallery.jpeg","original":"aab77acdce3b4273489b5f0f56d435.jpg"},{"tiny":"52e2bb91e7cebd3533e28acb1da45c_tiny.jpeg","jumbo":"52e2bb91e7cebd3533e28acb1da45c_jumbo.jpeg","small":"52e2bb91e7cebd3533e28acb1da45c_small.jpeg","thumb":"52e2bb91e7cebd3533e28acb1da45c_thumb.jpeg","medium":"52e2bb91e7cebd3533e28acb1da45c_medium.jpeg","gallery":"52e2bb91e7cebd3533e28acb1da45c_gallery.jpeg","big_gallery":"52e2bb91e7cebd3533e28acb1da45c_big_gallery.jpeg","original":"52e2bb91e7cebd3533e28acb1da45c.jpg"},{"tiny":"0094fc4c69491de8fa145b9f5024a7_tiny.jpeg","jumbo":"0094fc4c69491de8fa145b9f5024a7_jumbo.jpeg","small":"0094fc4c69491de8fa145b9f5024a7_small.jpeg","thumb":"0094fc4c69491de8fa145b9f5024a7_thumb.jpeg","medium":"0094fc4c69491de8fa145b9f5024a7_medium.jpeg","gallery":"0094fc4c69491de8fa145b9f5024a7_gallery.jpeg","big_gallery":"0094fc4c69491de8fa145b9f5024a7_big_gallery.jpeg","original":"0094fc4c69491de8fa145b9f5024a7.jpg"},{"tiny":"546507aa5cd27d7ec9ffd6b2beec1e_tiny.jpeg","jumbo":"546507aa5cd27d7ec9ffd6b2beec1e_jumbo.jpeg","small":"546507aa5cd27d7ec9ffd6b2beec1e_small.jpeg","thumb":"546507aa5cd27d7ec9ffd6b2beec1e_thumb.jpeg","medium":"546507aa5cd27d7ec9ffd6b2beec1e_medium.jpeg","gallery":"546507aa5cd27d7ec9ffd6b2beec1e_gallery.jpeg","big_gallery":"546507aa5cd27d7ec9ffd6b2beec1e_big_gallery.jpeg","original":"546507aa5cd27d7ec9ffd6b2beec1e.jpg"},{"tiny":"746bba2c3f48aa5ff538998b005d60_tiny.jpeg","jumbo":"746bba2c3f48aa5ff538998b005d60_jumbo.jpeg","small":"746bba2c3f48aa5ff538998b005d60_small.jpeg","thumb":"746bba2c3f48aa5ff538998b005d60_thumb.jpeg","medium":"746bba2c3f48aa5ff538998b005d60_medium.jpeg","gallery":"746bba2c3f48aa5ff538998b005d60_gallery.jpeg","big_gallery":"746bba2c3f48aa5ff538998b005d60_big_gallery.jpeg","original":"746bba2c3f48aa5ff538998b005d60.jpg"}]},"perspective":"Coronal","specifics":"bone window"},{"id":22806,"content_type":"image/jpeg","frames":[{"id":22803,"width":1534,"height":1487},{"id":22804},{"id":22805},{"id":22806,"current":true},{"id":22807},{"id":22808}],"annotations":[],"encodings":{"original_dicom":null,"video":null,"thumbnailed_files":[{"tiny":"7ea964b68faab887e264052ac80aaa_tiny.jpeg","jumbo":"7ea964b68faab887e264052ac80aaa_jumbo.jpeg","small":"7ea964b68faab887e264052ac80aaa_small.jpeg","thumb":"7ea964b68faab887e264052ac80aaa_thumb.jpeg","medium":"7ea964b68faab887e264052ac80aaa_medium.jpeg","gallery":"7ea964b68faab887e264052ac80aaa_gallery.jpeg","big_gallery":"7ea964b68faab887e264052ac80aaa_big_gallery.jpeg","original":"7ea964b68faab887e264052ac80aaa.jpg"},{"tiny":"f80c58892bc37552415cdf3cfd230b_tiny.jpeg","jumbo":"f80c58892bc37552415cdf3cfd230b_jumbo.jpeg","small":"f80c58892bc37552415cdf3cfd230b_small.jpeg","thumb":"f80c58892bc37552415cdf3cfd230b_thumb.jpeg","medium":"f80c58892bc37552415cdf3cfd230b_medium.jpeg","gallery":"f80c58892bc37552415cdf3cfd230b_gallery.jpeg","big_gallery":"f80c58892bc37552415cdf3cfd230b_big_gallery.jpeg","original":"f80c58892bc37552415cdf3cfd230b.jpg"},{"tiny":"83919a1389e8a294b7ed2ea16a1eb3_tiny.jpeg","jumbo":"83919a1389e8a294b7ed2ea16a1eb3_jumbo.jpeg","small":"83919a1389e8a294b7ed2ea16a1eb3_small.jpeg","thumb":"83919a1389e8a294b7ed2ea16a1eb3_thumb.jpeg","medium":"83919a1389e8a294b7ed2ea16a1eb3_medium.jpeg","gallery":"83919a1389e8a294b7ed2ea16a1eb3_gallery.jpeg","big_gallery":"83919a1389e8a294b7ed2ea16a1eb3_big_gallery.jpeg","original":"83919a1389e8a294b7ed2ea16a1eb3.jpg"},{"tiny":"81b92719e1cddfd22d540936c64531_tiny.jpeg","jumbo":"81b92719e1cddfd22d540936c64531_jumbo.jpeg","small":"81b92719e1cddfd22d540936c64531_small.jpeg","thumb":"81b92719e1cddfd22d540936c64531_thumb.jpeg","medium":"81b92719e1cddfd22d540936c64531_medium.jpeg","gallery":"81b92719e1cddfd22d540936c64531_gallery.jpeg","big_gallery":"81b92719e1cddfd22d540936c64531_big_gallery.jpeg","original":"81b92719e1cddfd22d540936c64531.jpg"},{"tiny":"27abf3fdbe53ba4aa346193cb8dba0_tiny.jpeg","jumbo":"27abf3fdbe53ba4aa346193cb8dba0_jumbo.jpeg","small":"27abf3fdbe53ba4aa346193cb8dba0_small.jpeg","thumb":"27abf3fdbe53ba4aa346193cb8dba0_thumb.jpeg","medium":"27abf3fdbe53ba4aa346193cb8dba0_medium.jpeg","gallery":"27abf3fdbe53ba4aa346193cb8dba0_gallery.jpeg","big_gallery":"27abf3fdbe53ba4aa346193cb8dba0_big_gallery.jpeg","original":"27abf3fdbe53ba4aa346193cb8dba0.jpg"},{"tiny":"e7711e8731a8c1da3024625ec10d20_tiny.jpeg","jumbo":"e7711e8731a8c1da3024625ec10d20_jumbo.jpeg","small":"e7711e8731a8c1da3024625ec10d20_small.jpeg","thumb":"e7711e8731a8c1da3024625ec10d20_thumb.jpeg","medium":"e7711e8731a8c1da3024625ec10d20_medium.jpeg","gallery":"e7711e8731a8c1da3024625ec10d20_gallery.jpeg","big_gallery":"e7711e8731a8c1da3024625ec10d20_big_gallery.jpeg","original":"e7711e8731a8c1da3024625ec10d20.jpg"}]},"perspective":null,"specifics":"bone window"}],"caption":{"us":"CT temporal bones","gb":"CT temporal bones"},"findings":{"us":"","gb":""},"contributor_login":"frank","case_id":5580,"case_key_image_id":null,"case_featured_at":null},"current_user":null,"access":{"can_edit":false,"can_download":true,"can_feature":false,"can_pin":true}}
CT through the left temporal bone demonstrates a circumscribed region of demineralization immediately anterior to the oval window, in the bone between the cochlea and vestibule.
{"study":{"id":7317,"case_slug":"fenestral-otosclerosis-5","modality":"Diagram","series":[{"id":22809,"content_type":"image/jpeg","frames":[{"id":22809,"width":600,"height":600,"current":true}],"annotations":[],"encodings":{"original_dicom":null,"video":null,"thumbnailed_files":[{"tiny":"3af2cac0fda81ad9bddcad27bd13fd_tiny.jpeg","jumbo":"3af2cac0fda81ad9bddcad27bd13fd_jumbo.jpeg","small":"3af2cac0fda81ad9bddcad27bd13fd_small.jpeg","thumb":"3af2cac0fda81ad9bddcad27bd13fd_thumb.jpeg","medium":"3af2cac0fda81ad9bddcad27bd13fd_medium.jpeg","gallery":"3af2cac0fda81ad9bddcad27bd13fd_gallery.jpeg","big_gallery":"3af2cac0fda81ad9bddcad27bd13fd_big_gallery.jpeg","original":"3af2cac0fda81ad9bddcad27bd13fd.jpg"}]},"perspective":null,"specifics":null}],"caption":{"us":"Annotated","gb":"Annotated"},"findings":{"us":"","gb":""},"contributor_login":"frank","case_id":5580,"case_key_image_id":null,"case_featured_at":null},"current_user":null,"access":{"can_edit":false,"can_download":true,"can_feature":false,"can_pin":true}}
The stapes' footplate fills the oval window. Immediately anterior to it is a region of lucency.
Case Discussion
This is a characteristic appearance for fenestral otosclerosis. It is a subtle finding which is often bilateral. As such getting used to the normal appearance of this region is essential if the diagnosis is to be made.
Unable to process the form. Check for errors and try again.