{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T01:26:08Z","timestamp":1777425968667,"version":"3.51.4"},"reference-count":17,"publisher":"SAGE Publications","issue":"8","license":[{"start":{"date-parts":[[2022,8,18]],"date-time":"2022-08-18T00:00:00Z","timestamp":1660780800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Ann Otol Rhinol Laryngol"],"published-print":{"date-parts":[[2023,8]]},"abstract":"<jats:sec>\n                    <jats:title>Background and Objectives:<\/jats:title>\n                    <jats:p>Performing an effective maxillary antrostomy is critical to improving chronic maxillary sinusitis symptomatology. Incomplete dissection of the uncinate process and failure to incorporate the natural drainage pathway may lead to recirculation and need for revision surgery. The purpose of this study is to determine if 70\u00b0 endoscopes provide added value in determining incomplete dissection or residual disease.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Prospective study of 35 sinuses from 18 patients undergoing FESS for Chronic Rhinosinusitis (CRS) between 11\/1\/2020 and 4\/30\/2021. Two fellowship trained Rhinologists initially performed maxillary antrostomies exclusively using a 0\u00b0 endoscope, then transitioned to a 70\u00b0 endoscope. Surgeons completed a survey to assess completion of the antrostomy prior to use of 70\u00b0 endoscope, sino-nasal anatomy, and difficulty of the operation. Intraoperative photographs before and after using a 70\u00b0 endoscope were evaluated by a third party. Pre-operative CT scans were used to evaluate the sphenoid keel-caudal septum-nasolacrimal duct (SK-CS-NL) angle.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Of 35 sinuses from 18 patients all 35 sinuses had CRS with 48.5% having nasal polyposis and 42.9% having active infection. There was residual inflammatory tissue in the anterior maxillary sinus, including polypoid tissue and uncinate process prior to using the 70\u00b0 endoscope in 82.9% of sinuses. The natural drainage pathway was not incorporated into the dissection in 28.6% of sinuses before converting to 70\u00b0 endoscope. Incomplete dissection with 0\u00b0 endoscope was not associated with nasal polyposis ( P\u2009=\u2009.086) or uncinate position (0.741). Narrow SK-CS-NL angles were associated with incomplete dissection of the anterior maxillary sinus with 0\u00b0 endoscope (16.0\u00b0\u2009\u00b1\u20093.0\u00b0 vs 20.6\u00b0\u2009\u00b1\u20093.2\u00b0; P\u2009=\u2009.013).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Use of 70\u00b0 endoscope in maxillary antrostomy may be beneficial in identifying and resecting disease within the anterior maxillary sinus that may otherwise be difficult to find using a 0\u00b0 endoscope. This is especially true in patients with narrow nasolacrimal duct positioning.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/00034894221119306","type":"journal-article","created":{"date-parts":[[2022,8,19]],"date-time":"2022-08-19T02:27:10Z","timestamp":1660876030000},"page":"873-878","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["The Use of 0\u00b0 and 70\u00b0 Endoscopes in Maxillary Antrostomy"],"prefix":"10.1177","volume":"132","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3471-3933","authenticated-orcid":false,"given":"Firas","family":"Hentati","sequence":"first","affiliation":[{"name":"Case Western Reserve University School of Medicine, Cleveland, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Armine","family":"Kocharyan","sequence":"additional","affiliation":[{"name":"University Hospitals Cleveland Medical Center, Cleveland, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7441-0964","authenticated-orcid":false,"given":"Richard G.","family":"Muller","sequence":"additional","affiliation":[{"name":"University Hospitals Cleveland Medical Center, Cleveland, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1116-1817","authenticated-orcid":false,"given":"Jeremy","family":"Ruthberg","sequence":"additional","affiliation":[{"name":"Case Western Reserve University School of Medicine, Cleveland, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Claudia I.","family":"Cabrera","sequence":"additional","affiliation":[{"name":"University Hospitals Cleveland Medical Center, Cleveland, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brian","family":"D\u2019Anza","sequence":"additional","affiliation":[{"name":"Case Western Reserve University School of Medicine, Cleveland, OH, USA"},{"name":"University Hospitals Cleveland Medical Center, Cleveland, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8159-1479","authenticated-orcid":false,"given":"Kenneth","family":"Rodriguez","sequence":"additional","affiliation":[{"name":"Case Western Reserve University School of Medicine, Cleveland, OH, USA"},{"name":"University Hospitals Cleveland Medical Center, Cleveland, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2022,8,18]]},"reference":[{"key":"bibr1-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1016\/j.amjoto.2004.06.002"},{"key":"bibr2-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-200111000-00015"},{"key":"bibr3-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-200405000-00004"},{"key":"bibr4-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1002\/alr.22264"},{"key":"bibr5-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1186\/s12901-016-0030-8"},{"key":"bibr6-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1002\/lary.22169"},{"key":"bibr7-00034894221119306","doi-asserted-by":"publisher","DOI":"10.2500\/ar.2016.7.0173"},{"key":"bibr8-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1177\/000348948909801112"},{"key":"bibr9-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1001\/archotol.1992.01880110047011"},{"key":"bibr10-00034894221119306","doi-asserted-by":"publisher","DOI":"10.2500\/ar.2015.6.0138"},{"key":"bibr11-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-323-47664-5.00006-7"},{"key":"bibr12-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1177\/194589240201600106"},{"key":"bibr13-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1177\/0145561319853260"},{"key":"bibr14-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1097\/01.MLG.0000161450.81557.6D"},{"key":"bibr15-00034894221119306","doi-asserted-by":"publisher","DOI":"10.4193\/Rhin20.401"},{"key":"bibr16-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1177\/000348941112000304"},{"key":"bibr17-00034894221119306","doi-asserted-by":"publisher","DOI":"10.1097\/MLG.0b013e31818208c1"}],"container-title":["Annals of Otology, Rhinology &amp; 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