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Practice guidelines recommend treatment of moderate to severe OP with glucocorticoids; however, there have been cases of steroid-resistant OP successfully treated with rituximab. We describe a case of a woman in her 20s with rheumatoid arthritis who presented with pleuritic chest pain, haemoptysis and dyspnoea on exertion and was diagnosed with OP after multiple radiographic images and biopsies. The patient failed numerous treatment regimens, including corticosteroids, antibiotics and mycophenolate, but was successfully treated with rituximab. This case highlights the importance of identifying new therapeutic agents that will minimise the use of glucocorticoids in the treatment of OP.<\/jats:p>","DOI":"10.1136\/bcr-2022-249912","type":"journal-article","created":{"date-parts":[[2022,11,1]],"date-time":"2022-11-01T10:55:55Z","timestamp":1667300155000},"page":"e249912","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":7,"title":["Rituximab for steroid-resistant organising pneumonia in a woman with rheumatoid arthritis"],"prefix":"10.1136","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6597-7996","authenticated-orcid":false,"given":"Christine Elizabeth","family":"Loftis","sequence":"first","affiliation":[{"name":"Internal Medicine, The University of Texas Rio Grande Valley School of Medicine, Edinburg, Texas, 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