{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T16:05:56Z","timestamp":1773849956326,"version":"3.50.1"},"reference-count":17,"publisher":"BMJ","issue":"1","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2018,12,17]]},"published-print":{"date-parts":[[2019,1]]},"abstract":"<jats:p>The authors report a case of a lung abscess caused by <jats:italic>Nocardia<\/jats:italic> sp. in a previously healthy adolescent. A 17-year-old young man presented with tonsillitis that did not respond to \u03b2-lactamic antibiotic, dyspnoea and thoracic pain. The X-ray revealed a cavitation in the right pulmonary upper lobe. He was admitted and completed a 14-day empirical antimicrobial therapy for a pulmonar abscess, although no clinical recovery was observed. He then underwent pulmonary biopsy of the lesion and PCR analysis of the collected pulmonary tissue, which revealed the presence of <jats:italic>Nocardia<\/jats:italic>. This case emphasises the importance of considering nocardiosis in the differential diagnosis of a lung abscess, particularly if no response to empirical therapy is obtained.<\/jats:p>","DOI":"10.1136\/bcr-2018-227499","type":"journal-article","created":{"date-parts":[[2019,1,11]],"date-time":"2019-01-11T04:29:16Z","timestamp":1547180956000},"page":"bcr-2018-227499","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":8,"title":["<i>Nocardia<\/i> lung abscess in an immunocompetent adolescent"],"prefix":"10.1136","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0589-0658","authenticated-orcid":false,"given":"Diana","family":"Soares","sequence":"first","affiliation":[{"name":"Department of Pediatrics, Centro Hospitalar Vila Nova de Gaia - Espinho EPE, Vila Nova de Gaia, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana","family":"Reis-Melo","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, Centro Hospitalar S\u00e3o Jo\u00e3o EPE, Porto, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Catarina","family":"Ferraz","sequence":"additional","affiliation":[{"name":"Pediatric Pulmonology Unit, Department of Pediatrics, Centro Hospitalar S\u00e3o Jo\u00e3o EPE, Porto, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luisa","family":"Guedes Vaz","sequence":"additional","affiliation":[{"name":"Pediatric Pulmonology Unit, Department of Pediatrics, Centro Hospitalar S\u00e3o Jo\u00e3o EPE, Porto, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2019,1,10]]},"reference":[{"key":"2025082700595574000_12.1.bcr-2018-227499.1","doi-asserted-by":"publisher","DOI":"10.1128\/CMR.19.2.259-282.2006"},{"key":"2025082700595574000_12.1.bcr-2018-227499.2","unstructured":"Bennett JE , Dolin R , Blaser MJ . 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