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Later it was established that he had <jats:italic>Pneumocystis jirovecii<\/jats:italic> pneumonia, which was treated to complete resolution with a course of corticosteroids and antibiotics. This case highlights the potential risk of G-CSF administration in an immune compromised individual in the midst of bone marrow recovery in the context of active infection. Recognition of immune escape syndromes is vital and requires an understanding of potential triggers and risk factors.<\/jats:p>","DOI":"10.1136\/bcr-2021-242316","type":"journal-article","created":{"date-parts":[[2022,2,3]],"date-time":"2022-02-03T11:40:12Z","timestamp":1643888412000},"page":"e242316","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":4,"title":["Acute respiratory distress syndrome precipitated by granulocyte colony-stimulating factor in undiagnosed <i>Pneumocystis jirovecii<\/i> pneumonia"],"prefix":"10.1136","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7105-241X","authenticated-orcid":false,"given":"Christopher","family":"Doig","sequence":"first","affiliation":[{"name":"Department of Haematology, Northern Health Research and Education, Epping, Victoria, 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