{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T15:01:16Z","timestamp":1781708476380,"version":"3.54.5"},"reference-count":15,"publisher":"Pensoft Publishers","issue":"3","license":[{"start":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T00:00:00Z","timestamp":1781654400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["FM"],"abstract":"<jats:p>Sinonasal oncocytic papilloma is a rare benign epithelial tumor arising from the Schneiderian mucosa, accounting for 3%-5% of all sinonasal papillomas. We present a case of a 67-year-old man with a history of non-Hodgkin lymphoma who presented with a one-year history of frontal and parietal headache, nasal obstruction, and discharge. Endoscopic examination revealed a polypoid lesion arising from the right inferior turbinate\u2014an exceptionally uncommon site. Computed tomography demonstrated a well-circumscribed mass confined to the inferior turbinate without bone erosion, while a positron emission tomography scan with a computed tomography revealed no fluorodeoxyglucose uptake. Histopathological evaluation confirmed the diagnosis of sinonasal oncocytic papilloma, characterized by oncocytic epithelium with eosinophilic cytoplasm and intraepithelial microcysts. The patient underwent endoscopic partial turbinectomy with complete excision of the lesion. Postoperative recovery was uneventful, and follow-up nasal endoscopy at one year showed complete mucosal healing without evidence of recurrence or polypoid degeneration. This case highlights an unusual localization of sinonasal oncocytic papilloma and underscores the diagnostic challenges associated with its differentiation from inflammatory and neoplastic lesions. It further emphasizes the importance of correlating histopathologic findings with imaging modalities, including a positron emission tomography scan with a computed tomography, in achieving an accurate diagnosis and optimal management of this rare entity.<\/jats:p>","DOI":"10.3897\/folmed.68.e170344","type":"journal-article","created":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T14:32:32Z","timestamp":1781706752000},"source":"Crossref","is-referenced-by-count":0,"title":["Sinonasal oncocytic Schneiderian papilloma limited to the inferior turbinate: a rare case"],"prefix":"10.3897","volume":"68","author":[{"given":"Constantinos","family":"Papadopoulos","sequence":"first","affiliation":[{"name":"General Hospital of Drama, Drama, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafail","family":"Ioannidis","sequence":"additional","affiliation":[{"name":"General Hospital of Drama, Drama, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anastasia","family":"Sarafidou","sequence":"additional","affiliation":[{"name":"St. Luke's Hospital, Thessaloniki, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Konstantina","family":"Dinaki","sequence":"additional","affiliation":[{"name":"General Hospital of Mytilene Vostaneio, Mytilene, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2258","published-online":{"date-parts":[[2026,6,17]]},"reference":[{"key":"170344_B1","doi-asserted-by":"crossref","unstructured":"Barnes L, Bedetti C. Oncocytic Schneiderian papilloma: a reappraisal of cylindrical cell papilloma of the sinonasal tract. Hum Pathol 1984;15(4):344-51.","DOI":"10.1016\/S0046-8177(84)80033-7"},{"key":"170344_B2","unstructured":"El-Naggar AK, Chan JKC, Grandis JR, et al. WHO classification of head and neck tumors. 4th ed. Lyon: IARC; 2017."},{"key":"170344_B3","doi-asserted-by":"crossref","unstructured":"Ward BE, Fechner RE, Mills SE. Carcinoma arising in oncocytic Schneiderian papilloma. Am J Surg Pathol 1990;14(4):364\u20139.","DOI":"10.1097\/00000478-199004000-00008"},{"key":"170344_B4","doi-asserted-by":"crossref","unstructured":"Mirza S, Bradley PJ, Acharya A, et al. Sinonasal inverted papillomas: recurrence, and synchronous and metachronous malignancy. J Laryngol Otol 2007;121(9):857\u201364.","DOI":"10.1017\/S002221510700624X"},{"key":"170344_B5","doi-asserted-by":"crossref","unstructured":"Kim DY, Hong SL, Lee CH, et al. Inverted papilloma of the nasal cavity and paranasal sinuses: a multicenter analysis. Laryngoscope 2012;122(3):487\u201394.","DOI":"10.1002\/lary.22495"},{"key":"170344_B6","doi-asserted-by":"crossref","unstructured":"Wang H, Zhai C, Liu J, et al. Low prevalence of human papillomavirus infection in sinonasal inverted papilloma and oncocytic papilloma. Virchows Arch 2020;476(4):577\u2013583.","DOI":"10.1007\/s00428-019-02717-3"},{"key":"170344_B7","doi-asserted-by":"crossref","unstructured":"Wang H, Liu Q, Xu R, et al. Outcomes of sinonasal oncocytic papilloma by endoscopic approach in 69 patients. Auris Nasus Larynx 2022;49(1):77\u201383.","DOI":"10.1016\/j.anl.2021.05.008"},{"key":"170344_B8","doi-asserted-by":"crossref","unstructured":"Karpischenko SA, Vereschagina OE, Stancheva OA, et al. Case report: Oncocytic Schneiderian papilloma originating from the sphenoid sinus. Front Med (Lausanne) 2022;9:621705.","DOI":"10.3389\/fmed.2022.621705"},{"key":"170344_B9","doi-asserted-by":"crossref","unstructured":"John NM, Kumar ER. A rare case of sinonasal oncocytic papilloma. J Rhinol 2025;32(2):117\u20139.","DOI":"10.18787\/jr.2025.00017"},{"key":"170344_B10","doi-asserted-by":"crossref","unstructured":"Goudakos JK, Blioskas S, Nikolaou A, et al. Endoscopic resection of sinonasal inverted papilloma: systematic review and meta-analysis. Am J Rhinol Allergy 2018;32(3):167\u201374.","DOI":"10.1177\/1945892418765004"},{"key":"170344_B11","doi-asserted-by":"crossref","unstructured":"Fan D, Zhu Y, Yang J, et al. Global research on sinonasal inverted papilloma over the past two decades: a bibliometric analysis. Acta Otorhinolaryngol Ital 2024;44(2):83\u201390.","DOI":"10.14639\/0392-100X-N2522"},{"key":"170344_B12","doi-asserted-by":"crossref","unstructured":"Yu S, Grose E, Lee DJ, et al. Evaluation of inverted papilloma recurrence rates and factors associated recurrence after endoscopic surgical resection: a retrospective review. J Otolaryngol Head Neck Surg 2023;52:34.","DOI":"10.1186\/s40463-023-00638-5"},{"key":"170344_B13","doi-asserted-by":"crossref","unstructured":"Vor der Holte AP, Fangk I, Glombitza S, et al. Identification of rare and common HPV genotypes in sinonasal papillomas. Head Neck Pathol 2020;14(4):936\u201343.","DOI":"10.1007\/s12105-020-01148-w"},{"key":"170344_B14","doi-asserted-by":"crossref","unstructured":"Zhang L, Hu C, Zheng X, et al. Oncocytic Schneiderian papilloma-associated adenocarcinoma and KRAS mutation: A case report. Medicine (Baltimore) 2018;97(23):e11025.","DOI":"10.1097\/MD.0000000000011025"},{"key":"170344_B15","unstructured":"Liao LJ, Hsu WL, Lo WC, et al. FDG uptake in oncocytic lesions: correlation with histopathology and mitochondrial content. Eur J Nucl Med Mol Imaging 2012;39(5):785\u201392."}],"container-title":["Folia Medica"],"original-title":[],"link":[{"URL":"https:\/\/foliamedica.bg\/article\/170344\/download\/pdf\/","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/foliamedica.bg\/article\/170344\/download\/xml\/","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/foliamedica.bg\/article_preview.php?id=170344&skip_redirect=1","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T14:33:09Z","timestamp":1781706789000},"score":1,"resource":{"primary":{"URL":"https:\/\/foliamedica.bg\/article\/170344\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6,17]]},"references-count":15,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2026,6,17]]}},"URL":"https:\/\/doi.org\/10.3897\/folmed.68.e170344","relation":{},"ISSN":["1314-2143","0204-8043"],"issn-type":[{"value":"1314-2143","type":"electronic"},{"value":"0204-8043","type":"print"}],"subject":[],"published":{"date-parts":[[2026,6,17]]},"article-number":"e170344"}}