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To the authors\u2019 knowledge this is the first case of MPO-ANCA positive vasculitis presenting as PUO and pulmonary fibrosis alone. The authors review the recent literature regarding the association of pulmonary fibrosis with ANCA-positive vasculitides with regards to pathogenesis, prognosis and treatment.<\/jats:p>","DOI":"10.1136\/bcr.01.2011.3692","type":"journal-article","created":{"date-parts":[[2011,4,15]],"date-time":"2011-04-15T20:05:06Z","timestamp":1302897906000},"page":"bcr0120113692","source":"Crossref","is-referenced-by-count":3,"title":["Pyrexia of unknown origin and pulmonary fibrosis as a presentation of MPO-ANCA associated vasculitis: Figure 1"],"prefix":"10.1136","volume":"2011","author":[{"given":"O","family":"Shields","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A","family":"Shah","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B","family":"Mann","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2011,4,15]]},"reference":[{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.1","doi-asserted-by":"publisher","DOI":"10.1002\/1529-0131(199904)42:3<421::AID-ANR5>3.0.CO;2-6"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.2","doi-asserted-by":"publisher","DOI":"10.1097\/01.rct.0000135280.79012.c7"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.3","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2008.096131"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.4","doi-asserted-by":"publisher","DOI":"10.1159\/000064068"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.5","doi-asserted-by":"publisher","DOI":"10.1007\/s00296-009-1121-2"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.6","doi-asserted-by":"crossref","first-page":"864","DOI":"10.7326\/0003-4819-70-4-864","article-title":"Fever of unknown origin.","volume":"70","author":"Petersdorf","year":"1969","journal-title":"Ann Intern Med"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.7","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejim.2009.11.006"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.8","doi-asserted-by":"publisher","DOI":"10.1111\/j.1440-1797.2009.01101.x"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.9","doi-asserted-by":"publisher","DOI":"10.1016\/j.rmed.2008.04.023"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.10","doi-asserted-by":"publisher","DOI":"10.1097\/MCP.0b013e32832ea4b3"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.11","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.00110109"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.12","first-page":"921","article-title":"Prevalence of myeloperoxidase-anti-neutrophil cytoplasmic antibody (MPO-ANCA) in patients with interstitial pneumonia.","volume":"45","author":"Shiraki","year":"2007","journal-title":"Nihon Kokyuki Gakkai Zasshi"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.13","doi-asserted-by":"publisher","DOI":"10.1097\/BOR.0b013e3283323538"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.14","doi-asserted-by":"publisher","DOI":"10.1159\/000183754"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.15","doi-asserted-by":"publisher","DOI":"10.1378\/chest.123.1.297"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.16","doi-asserted-by":"publisher","DOI":"10.1002\/art.22633"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.17","doi-asserted-by":"publisher","DOI":"10.1378\/chest.104.1.293"},{"key":"2025042707280138000_2011.apr15_1.bcr0120113692.18","doi-asserted-by":"crossref","first-page":"987","DOI":"10.1164\/ajrccm.160.3.9807139","article-title":"Antimyeloperoxidase-associated lung disease. 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