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A 64-year-old man with a history of allergic fungal rhinosinusitis (AFRS) undergoing a revision image-guided endoscopic sinus surgery was found to have a fibrous mass suspicious of malignancy projecting inferolaterally and attached to the floor of the left maxillary sinus. Diagnostic biopsies were taken, and additional surgery was required to successfully resect the tumor via a transnasal endoscopic dissection. Multiple permanent pathology samples concluded the diagnosis of an AM. Endoscopic investigations led to the incidental discovery and ultimate complete endoscopic resection of the AM. The utilization of an endoscopic resection compared to the traditional maxillectomy with reconstruction results in significant less short and long-term morbidity for the patient.<\/jats:p>","DOI":"10.1177\/0145561320930555","type":"journal-article","created":{"date-parts":[[2020,6,2]],"date-time":"2020-06-02T10:09:17Z","timestamp":1591092557000},"page":"908S-912S","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["Maxillary Sinus Ameloblastoma: Transnasal Endoscopic Management"],"prefix":"10.1177","volume":"100","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0823-0957","authenticated-orcid":false,"given":"John","family":"Karp","sequence":"first","affiliation":[{"name":"School of Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei","family":"Xiong","sequence":"additional","affiliation":[{"name":"Department of Pathology and Laboratory Medicine, University of British Columbia and St Paul\u2019s Sinus Centre, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sara","family":"Derikvand","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology, University of British Columbia and St Paul\u2019s Sinus Centre, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amin","family":"Javer","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology, University of British Columbia and St Paul\u2019s Sinus Centre, Vancouver, British Columbia, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2020,6,2]]},"reference":[{"key":"bibr1-0145561320930555","doi-asserted-by":"publisher","DOI":"10.4103\/0975-7406.155891"},{"key":"bibr2-0145561320930555","doi-asserted-by":"publisher","DOI":"10.1097\/00001665-200205000-00006"},{"key":"bibr3-0145561320930555","doi-asserted-by":"publisher","DOI":"10.1055\/s-2008-1058921"},{"issue":"5","key":"bibr4-0145561320930555","first-page":"1107","volume":"19","author":"Scholl R","year":"1999","journal-title":"Radio Graphics"},{"key":"bibr5-0145561320930555","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-0142(19980215)82:4<667::AID-CNCR8>3.0.CO;2-I"},{"key":"bibr6-0145561320930555","doi-asserted-by":"publisher","DOI":"10.1007\/s00405-015-3631-8"},{"key":"bibr7-0145561320930555","unstructured":"El-Naggar AK, Chan JKC, Grandis JR, Takata T, Slootweg PJ. 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