{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T03:41:46Z","timestamp":1784259706389,"version":"3.55.0"},"reference-count":16,"publisher":"Georg Thieme Verlag KG","issue":"04","license":[{"start":{"date-parts":[[2022,5,12]],"date-time":"2022-05-12T00:00:00Z","timestamp":1652313600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int Arch Otorhinolaryngol"],"published-print":{"date-parts":[[2022,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Introduction\u2003Choanal polyps are benign lesions arising from the sinonasal mucosa, extending through the choana into the nasopharynx. Though polyps arising from the maxillary sinus and extending to the choana are common, polyps arising from the sphenoid sinus ostium, posterior part of middle turbinate, and inferior and middle meatus are quite uncommon.<\/jats:p><jats:p>Objective\u2003To document the site of origin of choanal polyps arising from unusual sites; their clinical, radiological, and histopathological characteristics, as well as diagnostic challenges and management.<\/jats:p><jats:p>Methods\u2003This retrospective, single-center study included 14 patients aged 16 to 75-years-old with choanal polyps. After obtaining informed consent, their clinical, radiological and surgical details and histopathology reports were reviewed. Patients were followed for at least 6 months after surgery.<\/jats:p><jats:p>Results\u2003The predominant symptoms were unilateral nasal obstruction (n\u2009=\u20099), snoring, rhinorrhea, and epistaxis. Though anterior rhinoscopy was unremarkable, a mass could be visualized during posterior rhinoscopy in the nasopharynx in 11 patients, and a mass could be directly visualized in the oropharynx in 2 patients. After diagnostic by nasal endoscopy, these polyps were noted to arise from the posterior aspect of the middle meatus (n\u2009=\u20096), middle turbinate (n\u2009=\u20093), posterior septum (n\u2009=\u20093), sphenoid sinus ostium (n\u2009=\u20091), and inferior meatus (n\u2009=\u20091). All patients were managed surgically. The histopathological examination revealed inflammatory polyp (n\u2009=\u200912), actinomycosis (n\u2009=\u20091), and rhinosporidiosis (n\u2009=\u20091). Patients were followed up for 6 to 22 months. We observed no complications or recurrence.<\/jats:p><jats:p>Conclusion\u2003Diagnostic nasal endoscopy should be performed in all patients presenting with nasal obstruction, to rule out choanal polyps arising from unusual sites. Complete polyp removal and appropriate treatment based on histopathology prevents recurrence.<\/jats:p>","DOI":"10.1055\/s-0042-1742768","type":"journal-article","created":{"date-parts":[[2022,5,12]],"date-time":"2022-05-12T22:38:54Z","timestamp":1652395134000},"page":"e683-e687","source":"Crossref","is-referenced-by-count":5,"title":["Choanal Polyps Originating from Unusual Sites: A Rural Tertiary Care Center Experience"],"prefix":"10.1055","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0256-8949","authenticated-orcid":false,"given":"Lini","family":"Joseph","sequence":"additional","affiliation":[{"name":"Department of Ear, Nose, and Throat, Sri Devaraj URS Medical College, Tamaka, Kolar, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K. C.","family":"Prasad","sequence":"additional","affiliation":[{"name":"Department of Ear, Nose, and Throat, Sri Devaraj URS Medical College, Tamaka, Kolar, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3471-0855","authenticated-orcid":false,"given":"Prashanth","family":"Babu","sequence":"additional","affiliation":[{"name":"Department of Ear, Nose, and Throat, Sri Devaraj URS Medical College, Tamaka, Kolar, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0949-2155","authenticated-orcid":false,"given":"N.","family":"Harshitha","sequence":"additional","affiliation":[{"name":"Department of Ear, Nose, and Throat, Sri Devaraj URS Medical College, Tamaka, Kolar, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2022,5,12]]},"reference":[{"issue":"01","key":"ref1","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1007\/s00405-018-5208-9","article-title":"Choanal polyps in children and adults: 10-year experience from a tertiary care hospital","volume":"276","author":"A Peri\u0107","year":"2019","journal-title":"European Archives of Oto-Rhino-Laryngology"},{"issue":"04","key":"ref2","first-page":"265","article-title":"Nasal polyps in the pediatric population","volume":"8","author":"N Segal","year":"2012","journal-title":"B-ENT"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1016\/S0140-6736(01)32583-7","article-title":"The origin of choanal polypi","author":"G Killian","year":"1906","journal-title":"The Lancet"},{"issue":"02","key":"ref4","first-page":"129","article-title":"An unusual presentation of nasal polyp arising from floor of nasal cavity","volume":"3","author":"M S Naik","year":"2011","journal-title":"Otolaryngology Clinics: An International Journal."},{"issue":"04","key":"ref5","doi-asserted-by":"crossref","first-page":"00251","DOI":"10.15406\/joentr.2017.08.00251","article-title":"Sphenochoanal Polyp: A Rare Entity with Review of Literature","volume":"8","author":"A Kesarwani","year":"2017","journal-title":"J Otolaryngol ENT Res."},{"issue":"01","key":"ref6","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1186\/s40981-016-0028-7","article-title":"A case of unexpectedly difficult intubation caused by a large asymptomatic choanal polyp","volume":"2","author":"Y Hori","year":"2016","journal-title":"JA Clin Rep"},{"key":"ref7","first-page":"367364","article-title":"Nasopharyngeal actinomycosis","volume":"2011","author":"L Ouertatani","year":"2011","journal-title":"Case Rep Otolaryngol"},{"issue":"04","key":"ref8","doi-asserted-by":"crossref","first-page":"310","DOI":"10.1016\/j.otorri.2012.02.001","article-title":"Actinomycosis of the paranasal sinuses","volume":"64","author":"E S\u00e1nchez Legaza","year":"2013","journal-title":"Acta Otorrinolaringol Esp"},{"issue":"01","key":"ref9","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1067\/mhn.2001.110725","article-title":"Rhinosporidiosis: differential diagnosis of a large nasal mass","volume":"124","author":"K S Loh","year":"2001","journal-title":"Otolaryngol Head Neck Surg"},{"issue":"04","key":"ref10","doi-asserted-by":"crossref","first-page":"184","DOI":"10.1007\/s00405-003-0617-8","article-title":"Choanal polyp originating from the middle turbinate","volume":"261","author":"C \u00d6zcan","year":"2004","journal-title":"Eur Arch Otorhinolaryngol"},{"key":"ref11","first-page":"124","article-title":"Choanal polyp arising from middle turbinate. 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