{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T19:10:05Z","timestamp":1756321805805,"version":"3.44.0"},"reference-count":16,"publisher":"BMJ","issue":"3","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2020,1,14]]},"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:p>Superior semicircular canal dehiscence is caused by a bone defect on the roof of the superior semicircular canal. The estimated prevalence when unilateral varies between 0.4% and 0.7% and is still unknown when bilateral. Patients may present with audiologic and vestibular symptoms that may vary from asymptomatic to disabling. We report a case of a 72-year-old Caucasian woman presented to otolaryngology department reporting imbalance, bilateral pulsatile tinnitus, hypoacusis while being very sensitive to certain sounds. Physical examination was unremarkable, except for the Rinne test that was negative in both sides. The patient underwent an audiometry revealing a mild bilateral conductive hearing loss. A temporal bone CT scan was performed which evidenced bilateral superior semicircular canal dehiscence. Cervical vestibular evoked myogenic potentials and electrocochleography confirmed diagnosis. Although rare, superior semicircular canal dehiscence shall be considered in conductive hearing loss with vestibular symptoms.<\/jats:p>","DOI":"10.1136\/bcr-2019-233042","type":"journal-article","created":{"date-parts":[[2020,3,13]],"date-time":"2020-03-13T05:15:33Z","timestamp":1584076533000},"page":"e233042","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Bilateral superior semicircular canal dehiscence: bilateral conductive hearing loss with subtle vestibular symptoms"],"prefix":"10.1136","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7476-456X","authenticated-orcid":false,"given":"Diogo","family":"Pereira","sequence":"first","affiliation":[{"name":"Otorhinolaryngology, Hospital Pedro Hispano, Matosinhos, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ab\u00edlio","family":"Leonardo","sequence":"additional","affiliation":[{"name":"Otorhinolaryngology, Hospital Pedro Hispano, Matosinhos, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Delfim","family":"Duarte","sequence":"additional","affiliation":[{"name":"Otorhinolaryngology, Hospital Pedro Hispano, Matosinhos, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nuno","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Otorhinolaryngology, Hospital Pedro Hispano, Matosinhos, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2020,3,12]]},"reference":[{"key":"2025082711513037000_13.3.e233042.1","doi-asserted-by":"crossref","first-page":"226","DOI":"10.1002\/lary.23550","article-title":"Utility of cVEMPs in bilateral superior canal dehiscence syndrome","volume":"123","author":"Niesten","year":"2013","journal-title":"Laryngoscope"},{"key":"2025082711513037000_13.3.e233042.2","doi-asserted-by":"crossref","first-page":"e606","DOI":"10.1016\/j.ejrad.2013.06.022","article-title":"Semicircular canal dehiscence: frequency and distribution on temporal bone CT and its relationship with the clinical outcomes","volume":"82","author":"Elmali","year":"2013","journal-title":"Eur J Radiol"},{"key":"2025082711513037000_13.3.e233042.3","doi-asserted-by":"publisher","DOI":"10.1001\/archotol.124.3.249"},{"key":"2025082711513037000_13.3.e233042.4","first-page":"64","article-title":"Bilateral superior canal dehiscence syndrome","volume":"123","author":"Hornibrook","year":"2010","journal-title":"NZJM"},{"key":"2025082711513037000_13.3.e233042.5","unstructured":"Tullio P . Das Ohr und die Entstehung Der Sprache und Schrift. Berlin, Urban & Schwarzenberg, 1929."},{"key":"2025082711513037000_13.3.e233042.6","doi-asserted-by":"crossref","first-page":"319","DOI":"10.1017\/cjn.2015.384","article-title":"Bilateral superior semicircular canal dehiscence and Tullio phenomenon","volume":"43","author":"Lee","year":"2016","journal-title":"Can J Neurol Sci"},{"key":"2025082711513037000_13.3.e233042.7","doi-asserted-by":"publisher","DOI":"10.3174\/ajnr.A2437"},{"key":"2025082711513037000_13.3.e233042.8","first-page":"281","article-title":"S\u00edndrome dA deisc\u00eancia do canal semicircular superior: a prop\u00f3sito de dois casos cl\u00ednicos","volume":"49","author":"Guimar\u00e3es","year":"2011","journal-title":"Rev Portuguesa Otorrrinolaringologia e Cirurgia Cabe\u00e7a e Pesco\u00e7o"},{"key":"2025082711513037000_13.3.e233042.9","unstructured":"Benjamin T , Crane John P , Carey Lloyd B . Otologic surgery. Elsevier, 2010: 507\u201317."},{"key":"2025082711513037000_13.3.e233042.10","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1016\/j.heares.2015.02.001","article-title":"Electrocochleographic findings in superior canal dehiscence syndrome","volume":"323","author":"Park","year":"2015","journal-title":"Hear Res"},{"key":"2025082711513037000_13.3.e233042.11","doi-asserted-by":"crossref","DOI":"10.1136\/bcr-2019-229573","article-title":"Posterior semicircular canal dehiscence: a diagnostic and surgical conundrum","volume":"12","author":"Philip","year":"2019","journal-title":"BMJ Case Rep"},{"key":"2025082711513037000_13.3.e233042.12","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.55.12.1833"},{"key":"2025082711513037000_13.3.e233042.13","doi-asserted-by":"crossref","first-page":"414","DOI":"10.1590\/S0034-72992006000300020","article-title":"S\u00edndrome de Deisc\u00eancia de canal semicircular superior","volume":"72","author":"Ferreira","year":"2006","journal-title":"Rev. Bras. Otorrinolaringol."},{"key":"2025082711513037000_13.3.e233042.14","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/S0196-0709(00)80068-X","article-title":"Superior canal dehiscence syndrome","volume":"21","author":"Minor","year":"2000","journal-title":"Am J Otolaryngol"},{"key":"2025082711513037000_13.3.e233042.15","doi-asserted-by":"crossref","first-page":"337","DOI":"10.1148\/radiol.2262010897","article-title":"Ct evaluation of bone dehiscence of the superior semicircular canal as a cause of sound- and\/or pressure-induced vertigo","volume":"226","author":"Belden","year":"2003","journal-title":"Radiology"},{"key":"2025082711513037000_13.3.e233042.16","doi-asserted-by":"publisher","DOI":"10.1097\/00129492-200403000-00007"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2019-233042","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T18:51:40Z","timestamp":1756320700000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2019-233042"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,3]]},"references-count":16,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2020,3,12]]},"published-print":{"date-parts":[[2020,3]]}},"alternative-id":["10.1136\/bcr-2019-233042"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2019-233042","relation":{},"ISSN":["1757-790X"],"issn-type":[{"type":"electronic","value":"1757-790X"}],"subject":[],"published":{"date-parts":[[2020,3]]}}}