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However, a decrease in voice volume without a change of tone is a rare presentation. SPM is generally a benign and self\u2010limiting condition, but it can occasionally cause tension pneumothorax. If a young patient presents with a sudden decrease in voice volume without a change of tone, SPM should be considered as a possible diagnosis.<\/jats:p>","DOI":"10.1002\/jgf2.426","type":"journal-article","created":{"date-parts":[[2021,2,16]],"date-time":"2021-02-16T11:52:23Z","timestamp":1613476343000},"page":"218-220","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A sudden decrease in voice volume: A rare manifestation of spontaneous pneumomediastinum"],"prefix":"10.1002","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0086-3159","authenticated-orcid":false,"given":"Seigo","family":"Urushidani","sequence":"first","affiliation":[{"name":"Emergency and Critical Care Center Kurashiki Central Hospital Okayama Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5738-4031","authenticated-orcid":false,"given":"Akira","family":"Kuriyama","sequence":"additional","affiliation":[{"name":"Emergency and Critical Care Center Kurashiki Central Hospital Okayama Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,2,16]]},"reference":[{"key":"e_1_2_8_2_1","first-page":"1","article-title":"Spontaneous mediastinal emphysema","volume":"64","author":"Hamman L","year":"1939","journal-title":"Bull Johns Hopkins Hosp"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jamcollsurg.2014.06.001"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajem.2017.03.017"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/00005792-194412000-00001"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0194-5998(98)70296-7"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1378\/chest.123.6.2112"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-4975(99)01114-5"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvoice.2017.01.011"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.otc.2019.03.010"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejcts.2009.08.002"}],"container-title":["Journal of General and Family Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jgf2.426","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/jgf2.426","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jgf2.426","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,30]],"date-time":"2023-08-30T18:04:22Z","timestamp":1693418662000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jgf2.426"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,2,16]]},"references-count":10,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2021,7]]}},"alternative-id":["10.1002\/jgf2.426"],"URL":"https:\/\/doi.org\/10.1002\/jgf2.426","archive":["Portico"],"relation":{},"ISSN":["2189-7948","2189-7948"],"issn-type":[{"type":"print","value":"2189-7948"},{"type":"electronic","value":"2189-7948"}],"subject":[],"published":{"date-parts":[[2021,2,16]]},"assertion":[{"value":"2020-11-30","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-01-31","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-02-16","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}