{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T15:31:43Z","timestamp":1777563103547,"version":"3.51.4"},"reference-count":32,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2025,4,12]],"date-time":"2025-04-12T00:00:00Z","timestamp":1744416000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2025,4,12]],"date-time":"2025-04-12T00:00:00Z","timestamp":1744416000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Ear Nose Throat J"],"abstract":"<jats:p>Herein described is an eight-year-old female patient presenting with bilateral external ear canal duplication and a history of recurrent postauricular abscesses, otorrhea, and moderate left-sided conductive hearing loss. Previous incision and drainage of the postauricular abscesses yielded little long-term success. Medical history was otherwise unremarkable. Physical examination revealed a cystic mass in the right ear and postauricular fibrosis, likely a result of previous surgical interventions. An audiogram revealed asymmetric hearing function, with mild-to-moderate conductive hearing loss in the left ear contrasting normal hearing in the right ear, while tympanometry confirmed an intact right tympanic membrane but was precluded on the left due to purulent otorrhea. A head CT scan revealed postauricular soft tissue swelling and well-pneumatized mastoid air cells. Both ears were explored intraoperatively via postauricular incisions. Surgical excision included removal of a cyst, cartilaginous remnants, and fibrotic tissue. The patient was followed up to assess for postsurgical complications. The surgical site healed uneventfully; no new symptoms or recurrences of past symptoms of otorrhea, cyst formation, or abscesses had developed within the twelve weeks post-surgery. Although external ear canal duplications are rare, it is imperative that early, accurate diagnoses be made to ensure optimal patient outcomes.<\/jats:p>","DOI":"10.1177\/01455613251333233","type":"journal-article","created":{"date-parts":[[2025,4,12]],"date-time":"2025-04-12T06:36:36Z","timestamp":1744439796000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Bilateral External Ear Canal Duplication: A Case Report"],"prefix":"10.1177","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5778-2707","authenticated-orcid":false,"given":"Landon E.","family":"Ebbert","sequence":"first","affiliation":[{"name":"Mayo Clinic Alix School of Medicine, Scottsdale, AZ, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Crockett","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology, Head and Neck Surgery, Mayo Clinic, Phoenix, AZ, USA"},{"name":"Division of Otolaryngology, Phoenix Children\u2019s Hospital, AZ, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-8606-0643","authenticated-orcid":false,"given":"Nathan C.","family":"Page","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology, Head and Neck Surgery, Mayo Clinic, Phoenix, AZ, USA"},{"name":"Division of Otolaryngology, Phoenix Children\u2019s Hospital, AZ, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joshua L.","family":"Ebbert","sequence":"additional","affiliation":[{"name":"Brigham Young University, Provo, UT, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Grace","family":"Amoo-Quaye","sequence":"additional","affiliation":[{"name":"ENT Unit, Cape Coast Teaching Hospital, Ghana, West Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nana Andoh","family":"Mensah Hanson","sequence":"additional","affiliation":[{"name":"ENT Unit, Cape Coast Teaching Hospital, Ghana, West Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Appiah-Thompson","sequence":"additional","affiliation":[{"name":"ENT Unit, Cape Coast Teaching Hospital, Ghana, West Africa"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,4,12]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1064-7406(23)00385-1"},{"key":"e_1_3_3_3_2","first-page":"64","volume-title":"Branchial cleft and arch anomalies in children","author":"Waldhausen JH","unstructured":"Waldhausen JH. Branchial cleft and arch anomalies in children. Elsevier; 2006:64-69."},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.otc.2006.10.009"},{"key":"e_1_3_3_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/lary.5540900309"},{"key":"e_1_3_3_6_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2273.1996.tb01725.x"},{"key":"e_1_3_3_7_2","first-page":"93","article-title":"Defects of the first branchial cleft","volume":"1971","author":"Arnot RS","unstructured":"Arnot RS. Defects of the first branchial cleft. S Afr J Surg. 1971:93-98.","journal-title":"S Afr J Surg"},{"key":"e_1_3_3_8_2","doi-asserted-by":"publisher","DOI":"10.1288\/00005537-197209000-00001"},{"key":"e_1_3_3_9_2","doi-asserted-by":"publisher","DOI":"10.1001\/archotol.124.3.291"},{"key":"e_1_3_3_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijporl.2004.08.011"},{"key":"e_1_3_3_11_2","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-199707000-00009"},{"key":"e_1_3_3_12_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1525-1470.2002.00071.x"},{"key":"e_1_3_3_13_2","doi-asserted-by":"publisher","DOI":"10.1288\/00005537-198702000-00003"},{"issue":"1","key":"e_1_3_3_14_2","first-page":"924571","article-title":"Duplication of the external auditory canal: two cases and a review of the literature","volume":"2012","author":"Goudakos JK","year":"2012","unstructured":"Goudakos JK, Blioskas S, Psillas G, Vital V, Markou K. Duplication of the external auditory canal: two cases and a review of the literature. Case Rep Otolaryngol. 2012;2012(1):924571.","journal-title":"Case Rep Otolaryngol"},{"key":"e_1_3_3_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0165-5876(01)00424-4"},{"key":"e_1_3_3_16_2","doi-asserted-by":"publisher","DOI":"10.1002\/ccr3.5496"},{"key":"e_1_3_3_17_2","doi-asserted-by":"publisher","DOI":"10.1080\/23772484.2019.1698957"},{"key":"e_1_3_3_18_2","doi-asserted-by":"publisher","DOI":"10.1177\/0145561319871235"},{"issue":"15","key":"e_1_3_3_19_2","first-page":"2987","article-title":"Duplication anomaly of the external auditory canal involving the middle ear","volume":"126","author":"Chen S-b","year":"2013","unstructured":"Chen S-b, Zhao S-q, Wang D-n. Duplication anomaly of the external auditory canal involving the middle ear. Chin Med J. 2013;126(15):2987-2989.","journal-title":"Chin Med J"},{"key":"e_1_3_3_20_2","doi-asserted-by":"publisher","DOI":"10.1259\/dmfr\/52501714"},{"key":"e_1_3_3_21_2","doi-asserted-by":"publisher","DOI":"10.1177\/014556131109000705"},{"key":"e_1_3_3_22_2","doi-asserted-by":"publisher","DOI":"10.1258\/002221503321046612"},{"key":"e_1_3_3_23_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijscr.2020.12.007"},{"issue":"5","key":"e_1_3_3_24_2","first-page":"314","article-title":"Congenital duplication of the external auditory canal","volume":"38","author":"Vokurka J","year":"1989","unstructured":"Vokurka J. Congenital duplication of the external auditory canal. Cesk Otolaryngol. 1989;38(5):314-317.","journal-title":"Cesk Otolaryngol"},{"issue":"5","key":"e_1_3_3_25_2","first-page":"585","article-title":"Duplication of external auditory canal of a four year old girl","volume":"122","author":"Palve M","year":"2006","unstructured":"Palve M, Kantola O, Nikanne E. Duplication of external auditory canal of a four year old girl. Duodecim. 2006;122(5):585-587.","journal-title":"Duodecim"},{"issue":"6","key":"e_1_3_3_26_2","article-title":"Thyroglossal duct cysts: a consideration in adults","volume":"71","author":"Mohan PS","year":"2005","unstructured":"Mohan PS, Chokshi RA, Moser RL, Razvi SA. Thyroglossal duct cysts: a consideration in adults. Am Surg. 2005;71(6):508-11.","journal-title":"Am Surg"},{"key":"e_1_3_3_27_2","doi-asserted-by":"publisher","DOI":"10.4103\/ijo.IJO_145_22"},{"key":"e_1_3_3_28_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacr.2023.08.008"},{"issue":"11","key":"e_1_3_3_29_2","first-page":"896","article-title":"Unexplained Lymphadenopathy: Evaluation and Differential Diagnosis","volume":"94","author":"Gaddey HL","year":"2016","unstructured":"Gaddey HL, Riegel AM. Unexplained Lymphadenopathy: Evaluation and Differential Diagnosis. Am Fam Physician. 2016;94(11):896-903.","journal-title":"Am Fam Physician"},{"key":"e_1_3_3_30_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00405-012-2200-7"},{"key":"e_1_3_3_31_2","doi-asserted-by":"publisher","DOI":"10.1308\/rcsann.2018.0214"},{"key":"e_1_3_3_32_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00405-022-07607-0"},{"key":"e_1_3_3_33_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijom.2013.05.026"}],"container-title":["Ear, Nose &amp; Throat Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/01455613251333233","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/01455613251333233","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/01455613251333233","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T18:38:29Z","timestamp":1777401509000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/01455613251333233"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,4,12]]},"references-count":32,"alternative-id":["10.1177\/01455613251333233"],"URL":"https:\/\/doi.org\/10.1177\/01455613251333233","relation":{},"ISSN":["0145-5613","1942-7522"],"issn-type":[{"value":"0145-5613","type":"print"},{"value":"1942-7522","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,4,12]]},"article-number":"01455613251333233"}}