{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T11:40:23Z","timestamp":1792496423102,"version":"4.5.0"},"reference-count":11,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T00:00:00Z","timestamp":1792454400000},"content-version":"vor","delay-in-days":292,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Case Reports in Otolaryngology"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>Primary basal cell carcinoma (BCC) of the external auditory canal (EAC) is an uncommon malignancy for which evidence\u2010based treatment recommendations remain limited. This study reports two institutional cases treated with sleeve resection and provides a structured review of the published literature, with particular emphasis on patient selection, surgical technique and the limitations of the currently available evidence.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A retrospective review was performed of patients with primary BCC of the EAC treated at the Otolaryngology and Otoneurosurgery Department, Parma University Hospital (Italy). In addition, a structured review of the literature based on a systematic search of PubMed and Google Scholar was conducted. Only histologically confirmed primary BCCs arising from the EAC were included. Institutional and published cases were summarised descriptively with regard to tumour stage, treatment modality, recurrence, postoperative complications, adjuvant therapy and follow\u2010up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Two patients with early\u2010stage primary BCC of the EAC underwent sleeve resection with intraoperative frozen\u2010section margin assessment and remained disease\u2010free after 24 and 36\u2009months of follow\u2010up, respectively. One patient developed partial postoperative EAC stenosis. The literature search identified 11 additional patients from five published studies, resulting in a descriptive cohort of 13 cases. Conservative surgical approaches, including local canal resection and sleeve resection, were the most frequently reported treatments. Only one recurrence was identified across the available reports. However, treatment strategies and follow\u2010up duration were highly heterogeneous, precluding meaningful comparisons between conservative and more extensive surgical approaches.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Sleeve resection appears to be a feasible hearing\u2010preserving option for carefully selected patients with early\u2010stage primary BCC confined to the EAC and without radiological or intraoperative evidence of bony invasion. However, the currently available evidence is limited to isolated case reports and small retrospective series. Consequently, no conclusions regarding oncological equivalence with more extensive surgery can be drawn. Careful preoperative staging, intraoperative margin assessment and long\u2010term clinical surveillance extending beyond 5\u2009years remain essential.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1155\/crot\/9932974","type":"journal-article","created":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T10:46:27Z","timestamp":1792493187000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Primary Early\u2010Stage Basal Cell Carcinoma of the External Auditory Canal and the Role of Sleeve Resection: Case Series and Review of the Literature"],"prefix":"10.1155","volume":"2026","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-1033-0938","authenticated-orcid":false,"given":"Daniele","family":"Fasanella","sequence":"first","affiliation":[{"name":"University of Parma  Parma Italy  unipr.it"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5543-3899","authenticated-orcid":false,"given":"Enrico","family":"Liaci","sequence":"additional","affiliation":[{"name":"University of Parma  Parma Italy  unipr.it"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-2734-507X","authenticated-orcid":false,"given":"Maria Luce","family":"Bardon","sequence":"additional","affiliation":[{"name":"University of Parma  Parma Italy  unipr.it"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7977-7258","authenticated-orcid":false,"given":"Andrea","family":"Bacciu","sequence":"additional","affiliation":[{"name":"University of Parma  Parma Italy  unipr.it"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1256-3321","authenticated-orcid":false,"given":"Enrico","family":"Pasanisi","sequence":"additional","affiliation":[{"name":"University of Parma  Parma Italy  unipr.it"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3266-5069","authenticated-orcid":false,"given":"Filippo","family":"Di Lella","sequence":"additional","affiliation":[{"name":"University of Parma  Parma Italy  unipr.it"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,20]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.n71"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.5152\/iao.2018.4952"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.pdpdt.2019.08.008"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00405-020-06019-2"},{"key":"e_1_2_9_5_2","doi-asserted-by":"crossref","DOI":"10.1097\/MAO.0b013e318245ccbf","volume-title":"Surgical Approach for Treatment of Carcinoma of the Anterior Wall of the External Auditory Canal","author":"Hosokawa 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Otolaryngology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1155\/crot\/9932974","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1155\/crot\/9932974","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1155\/crot\/9932974","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T10:46:28Z","timestamp":1792493188000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1155\/crot\/9932974"}},"subtitle":[],"editor":[{"given":"Anuja","family":"Salgaonkar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"editor"}]}],"short-title":[],"issued":{"date-parts":[[2026,1]]},"references-count":11,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2026,1]]}},"alternative-id":["10.1155\/crot\/9932974"],"URL":"https:\/\/doi.org\/10.1155\/crot\/9932974","archive":["Portico"],"relation":{},"ISSN":["2090-6765","2090-6773"],"issn-type":[{"value":"2090-6765","type":"print"},{"value":"2090-6773","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,1]]},"assertion":[{"value":"2025-11-24","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication 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