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The progression of these lung cystic lesions remains inadequately explored.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Case presentation and literature review<\/jats:title>\n                <jats:p>An 81-year-old male, a non-smoker with a history of rheumatoid arthritis, presented with fever, cough, and expectoration for 14\u00a0days. Initially diagnosed with moderate COVID-19, he deteriorated to severe COVID-19 despite adherence to local treatment guidelines. Successive identification of three cystic lesions termed \u201cbulla\u201d or \u201cpneumatocele\u201d, and one cystic lesion with air-fluid level, referred to as \u201cpneumo-hamatocele\u201d (PHC), occurred in his lungs. Gradual improvement followed anti-inflammatory therapy and optimal supportive care. However, on day 42, sudden worsening dyspnea prompted a computed tomography (CT) scan, confirming a right spontaneous pneumothorax and subcutaneous emphysema, likely due to PHC rupture. Discharge followed chest tube implementation for pneumothorax resolution. On day 116, he returned to the hospital with mild exertional dyspnea. Chest CT revealed recurrent right pneumothorax from a remaining cyst in the right lung. Apart from our patient, literature retrieval identified 22 COVID-19 patients with spontaneous pneumothorax due to cystic lesions, with a male predominance (95.6%; 22\/23). Diagnosis of pneumothorax and lung cystic lesions occurred around day 29.5 (range: 18\u201335) and day 26.4 (\u00b1\u20099.8) since symptom onset, respectively. Except for one patient whose pneumothorax occurred on day seven of illness, all patients eventually recovered.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Recurrent spontaneous pneumothorax secondary to lung cystic lesions may manifest in convalescent COVID-19 patients, particularly males with COVID-19 pneumonia. Chest CT around 2 to 3\u00a0weeks post-symptom onset may be prudent to detect cystic lesion development and anticipate spontaneous pneumothorax.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12890-024-03169-5","type":"journal-article","created":{"date-parts":[[2024,7,19]],"date-time":"2024-07-19T11:01:44Z","timestamp":1721386904000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Recurrent spontaneous pneumothorax secondary to lung cystic lesions in a case of convalescent COVID-19: a case report and literature review"],"prefix":"10.1186","volume":"24","author":[{"given":"Yangzi","family":"Song","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianmin","family":"Jin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuechen","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinguo","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zuojun","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,7,19]]},"reference":[{"key":"3169_CR1","doi-asserted-by":"publisher","first-page":"803","DOI":"10.2169\/internalmedicine.5684-20","volume":"60","author":"L Sato","year":"2021","unstructured":"Sato L, Kinoshita N, Nakamoto T, Ohmagari N. 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