{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T00:03:48Z","timestamp":1756425828709,"version":"3.44.0"},"reference-count":14,"publisher":"BMJ","issue":"11","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2023,10,28]]},"published-print":{"date-parts":[[2023,11]]},"abstract":"<jats:p>An elderly (8th decade) diabetic patient presented with insidious, painless protrusion of the right eye for 1 month, associated with nasal congestion. Past history included healed serous chorioretinopathy in the right eye (&gt;30 years back) and recently diagnosed (1 year prior) autoimmune IgG4-related pancreatitis for which he was on long-term corticosteroids. On nasal endoscopic examination, a well circumscribed mass was found in the right nasal cavity.<\/jats:p>\n               <jats:p>Keeping in mind the systemic diagnosis, the sinonasal mass was suspected to be a IgG4-related disease. An endoscopic biopsy was performed and revealed a surprise diagnosis of grade 1 nasal schwannoma.<\/jats:p>","DOI":"10.1136\/bcr-2023-255135","type":"journal-article","created":{"date-parts":[[2023,11,16]],"date-time":"2023-11-16T22:50:14Z","timestamp":1700175014000},"page":"e255135","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Sinonasal schwannoma masquerading as an IgG4-related nasal mass"],"prefix":"10.1136","volume":"16","author":[{"given":"Shrimoyee","family":"Roy","sequence":"first","affiliation":[{"name":"Otorhinolaryngology and Head and Neck Surgery, Post Graduate Institute of Medical Education and Research, Chandigarh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0891-8169","authenticated-orcid":false,"given":"Aditi","family":"Mehta","sequence":"additional","affiliation":[{"name":"Grewal Eye Institute, Chandigarh, Chandigarh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Manjul","family":"Muraleedharan","sequence":"additional","affiliation":[{"name":"Otorhinolaryngology and Head and Neck Surgery, Post Graduate Institute of Medical Education and Research, Chandigarh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7856-4752","authenticated-orcid":false,"given":"Ramandeep Singh","family":"Virk","sequence":"additional","affiliation":[{"name":"Otorhinolaryngology and Head and Neck Surgery, Post Graduate Institute of Medical Education and Research, Chandigarh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2023,11,16]]},"reference":[{"key":"2025082802271572000_16.11.e255135.1","doi-asserted-by":"crossref","first-page":"08","DOI":"10.37549\/AR2402","article-title":"Sino-orbital pathologies: an approach to diagnosis and identifying complications","volume":"46","author":"Agarwal","year":"2017","journal-title":"Appl Radiol"},{"key":"2025082802271572000_16.11.e255135.2","doi-asserted-by":"crossref","first-page":"15","DOI":"10.3329\/bjo.v16i1.5776","article-title":"Clinicopathological study of sinonasal masses","volume":"16","author":"Humayun","year":"2010","journal-title":"Bangladesh J of Otorhinolaryngology"},{"key":"2025082802271572000_16.11.e255135.3","first-page":"372","article-title":"Clinico-pathological profile of sinonasal masses: a study from a tertiary care hospital of India","volume":"31","author":"Lathi","year":"2011","journal-title":"Acta Otorhinolaryngol Ital"},{"key":"2025082802271572000_16.11.e255135.4","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM200103083441005"},{"key":"2025082802271572000_16.11.e255135.5","doi-asserted-by":"crossref","first-page":"1725","DOI":"10.1002\/lio2.944","article-title":"Sinonasal IgG4-related sclerosing disease: a rare entity and challenging diagnosis","volume":"7","author":"Hess","year":"2022","journal-title":"Laryngoscope Investig Otolaryngol"},{"key":"2025082802271572000_16.11.e255135.6","doi-asserted-by":"crossref","DOI":"10.1136\/bcr-2018-224472","article-title":"Immunoglobulin G4-related disease of the paranasal sinuses","volume":"2018","author":"Bashyam","year":"2018","journal-title":"BMJ Case Rep"},{"key":"2025082802271572000_16.11.e255135.7","doi-asserted-by":"crossref","first-page":"109560","DOI":"10.1016\/j.ejrad.2021.109560","article-title":"Imaging of IgG4-related disease in the extracranial head and neck","volume":"136","author":"Dragan","year":"2021","journal-title":"Eur J Radiol"},{"key":"2025082802271572000_16.11.e255135.8","doi-asserted-by":"crossref","first-page":"2883","DOI":"10.1007\/s00405-020-06564-w","article-title":"Sinonasal IgG4- related disease: a rare and emerging entity broadening the differential diagnosis in the sinonasal universe","volume":"278","author":"Kaur","year":"2021","journal-title":"Eur Arch Otorhinolaryngol"},{"key":"2025082802271572000_16.11.e255135.9","doi-asserted-by":"crossref","unstructured":"Liu C , Ar\u00e8s C . Steroid treatment masking the diagnosis of IgG4-related orbitopathy. Invest Ophthalmol Vis Sci 2019;60. doi:10.1167\/iovs.18-26483","DOI":"10.1167\/iovs.18-26483"},{"key":"2025082802271572000_16.11.e255135.10","doi-asserted-by":"crossref","first-page":"334","DOI":"10.1016\/j.otohns.2004.04.027","article-title":"Ethmoid schwannoma","volume":"132","author":"Gillman","year":"2005","journal-title":"Otolaryngol--Head Neck Surg"},{"key":"2025082802271572000_16.11.e255135.11","doi-asserted-by":"crossref","first-page":"1540","DOI":"10.1007\/s12070-021-02635-4","article-title":"An extensive unilateral nasal mass: septal schwannoma-case report","volume":"74","author":"Roy","year":"2022","journal-title":"Indian J Otolaryngol Head Neck Surg"},{"key":"2025082802271572000_16.11.e255135.12","doi-asserted-by":"crossref","first-page":"213","DOI":"10.1016\/j.anorl.2018.03.001","article-title":"Frontal sinus schwannoma","volume":"135","author":"Petersen","year":"2018","journal-title":"Eur Ann Otorhinolaryngol Head Neck Dis"},{"key":"2025082802271572000_16.11.e255135.13","doi-asserted-by":"publisher","DOI":"10.3174\/ajnr.A3257"},{"key":"2025082802271572000_16.11.e255135.14","first-page":"929","article-title":"CT and MR imaging findings in sinonasal schwannoma","volume":"27","author":"Yu","year":"2006","journal-title":"AJNR Am J Neuroradiol"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2023-255135","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T09:27:24Z","timestamp":1756373244000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2023-255135"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,11]]},"references-count":14,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2023,11,16]]},"published-print":{"date-parts":[[2023,11]]}},"alternative-id":["10.1136\/bcr-2023-255135"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2023-255135","relation":{},"ISSN":["1757-790X"],"issn-type":[{"type":"electronic","value":"1757-790X"}],"subject":[],"published":{"date-parts":[[2023,11]]}}}