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The available literature describing pneumocele cases was reviewed.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methodology<\/jats:title>\n                <jats:p>PubMed and Science Direct databases were searched by two independent reviewers. The primary outcome was finding descriptions of the sinus pneumocele. In the end, papers on frontal sinus pneumocele that was not the result of trauma, congenital defects or comorbidities were selected. Moreover, the authors presented their own cases of SSS and pneumocele.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Twelve case reports of frontal sinus pneumocele were found, one own case was presented. In addition, 8 subjects with SSS, diagnosed and treated in the period from September 2017 to May 2022, were described.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>With the increasing number of patients suffering from sinus diseases and the growing number of endoscopic surgeries, the knowledge of rare sinus syndromes will increase the safety of the procedures performed.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00405-022-07697-w","type":"journal-article","created":{"date-parts":[[2022,10,18]],"date-time":"2022-10-18T17:04:29Z","timestamp":1666112669000},"page":"519-527","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["What may surprise a rhinologist in everyday clinical practice: silent sinus syndrome or pneumosinus dilatans\/pneumocele? Literature review and own experience"],"prefix":"10.1007","volume":"280","author":[{"given":"Gra\u017cyna","family":"Stryjewska-Makuch","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8091-2840","authenticated-orcid":false,"given":"Magdalena","family":"Kokoszka","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karolina","family":"Goroszkiewicz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Olga","family":"Kar\u0142owska-Bijak","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bogdan","family":"Kolebacz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maciej","family":"Misio\u0142ek","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,10,18]]},"reference":[{"issue":"6","key":"7697_CR1","doi-asserted-by":"publisher","first-page":"486","DOI":"10.1097\/01.icu.0000142510.68451.32","volume":"15","author":"LM Buono","year":"2004","unstructured":"Buono LM (2004) The silent sinus syndrome: maxillary sinus atelectasis with enophthalmos and hypoglobus. 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