{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T00:03:43Z","timestamp":1756425823406,"version":"3.44.0"},"reference-count":7,"publisher":"BMJ","issue":"7","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2021,6,22]]},"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:p>A case report of a patient with bilateral frontoethmoid mucoceles with no obvious predisposing factors and each side presenting three years apart, with no ongoing nasal or paranasal signs of disease in the interim.<\/jats:p>\n               <jats:p>Bilateral paranasal sinus mucoceles have rarely been described in the literature; this case is unique, as it is the first description of a metachronous presentation. Additionally, the absence of any predisposing factors such as trauma, surgery or chronic sinusitis in either presentation is unusual.<\/jats:p>","DOI":"10.1136\/bcr-2021-243620","type":"journal-article","created":{"date-parts":[[2021,7,1]],"date-time":"2021-07-01T12:36:23Z","timestamp":1625142983000},"page":"e243620","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Unusual metachronous presentation of bilateral frontoethmoid sinus mucoceles"],"prefix":"10.1136","volume":"14","author":[{"given":"Kirsty","family":"Davies","sequence":"first","affiliation":[{"name":"Department of Otolaryngology, Glangwili General Hospital, Carmarthen, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3342-4849","authenticated-orcid":false,"given":"Jennifer","family":"Wallace","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology, Glangwili General Hospital, Carmarthen, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6268-2882","authenticated-orcid":false,"given":"Edgardo","family":"Abelardo","sequence":"additional","affiliation":[{"name":"ENT-HNS, Hywel Dda University Health Board, Carmarthen, UK"},{"name":"Institute of Life Sciences 2, Swansea University Medical School, Swansea, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mario","family":"Jaramillo","sequence":"additional","affiliation":[{"name":"ENT-HNS, Hywel Dda University Health Board, Carmarthen, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2021,7,1]]},"reference":[{"key":"2025082802133542000_14.7.e243620.1","doi-asserted-by":"crossref","first-page":"834","DOI":"10.1177\/014556130408301216","article-title":"Bilateral asymmetric mucoceles of the paranasal sinuses: a first case report","volume":"83","author":"Varghese","year":"2004","journal-title":"Ear Nose Throat J"},{"key":"2025082802133542000_14.7.e243620.2","doi-asserted-by":"crossref","first-page":"E13","DOI":"10.1177\/014556131109000211","article-title":"Bilateral asymmetrical mucoceles of the paranasal sinuses with unilateral orbital complications","volume":"90","author":"Chong","year":"2011","journal-title":"Ear Nose Throat J"},{"key":"2025082802133542000_14.7.e243620.3","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/j.anorl.2011.10.002","article-title":"Sinus mucocele: natural history and long-term recurrence rate","volume":"129","author":"Devars du Mayne","year":"2012","journal-title":"Eur Ann Otorhinolaryngol Head Neck Dis"},{"key":"2025082802133542000_14.7.e243620.4","doi-asserted-by":"crossref","first-page":"990","DOI":"10.1016\/j.anl.2020.05.012","article-title":"Orbital complications of infected mucocele in the paranasal sinuses","volume":"47","author":"Makihara","year":"2020","journal-title":"Auris Nasus Larynx"},{"key":"2025082802133542000_14.7.e243620.5","doi-asserted-by":"publisher","DOI":"10.1002\/lary.24309"},{"key":"2025082802133542000_14.7.e243620.6","doi-asserted-by":"crossref","first-page":"088","DOI":"10.1055\/s-0038-1668126","article-title":"Mucocele: clinical characteristics and outcomes in 46 operated patients","volume":"23","author":"Plantier","year":"2019","journal-title":"Int Arch Otorhinolaryngol"},{"key":"2025082802133542000_14.7.e243620.7","doi-asserted-by":"crossref","first-page":"234","DOI":"10.1016\/j.amjoto.2008.06.006","article-title":"Extensive paranasal sinus mucoceles: a 15-year review of 82 cases","volume":"30","author":"Lee","year":"2009","journal-title":"Am J Otolaryngol"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2021-243620","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T09:13:43Z","timestamp":1756372423000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2021-243620"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,7]]},"references-count":7,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2021,7,1]]},"published-print":{"date-parts":[[2021,7]]}},"alternative-id":["10.1136\/bcr-2021-243620"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2021-243620","relation":{},"ISSN":["1757-790X"],"issn-type":[{"type":"electronic","value":"1757-790X"}],"subject":[],"published":{"date-parts":[[2021,7]]}}}