{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T02:04:08Z","timestamp":1790215448037,"version":"4.1.0"},"reference-count":25,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T00:00:00Z","timestamp":1788480000000},"content-version":"vor","delay-in-days":3,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100019779","name":"Qatar National Library","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100019779","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Respiratory J"],"published-print":{"date-parts":[[2026,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Sarcoidosis data from the Middle East are limited, and regional studies have been predominantly single\u2010ethnicity, leaving phenotyping in the region's diverse expatriate populations unexplored. We characterised pulmonary sarcoidosis across ethnic groups in Qatar and examined temporal trends over 9\u2009years.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Retrospective cohort study of adults with pulmonary sarcoidosis managed at Hamad Medical Corporation, the principal public\u2010sector provider in Qatar, between 2015 and 2023. The primary ethnic comparison was Arab versus South Asian. Because diffusion capacity (DLCO) was differentially ascertained, sensitivity analyses assessed the potential impact of missing data.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      We included 156 patients (64.7% male; median age 45\u2009years; Arab 45.5%, South Asian 41.0%). Stage II predominated (67.3%); Stage IV was present in 15.4%. Histologic confirmation was achieved in 83.3%, primarily by EBUS\u2010TBNA (single\u2010procedure yield 94.3%). Corticosteroids were prescribed in 61.5%. South Asian patients were younger (43 vs. 50\u2009years;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.003), more frequently male (80% vs. 54%;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.002), and reported constitutional symptoms more often (18.8% vs. 5.6%;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.031). Among patients with available measurements, South Asians had lower median DLCO (78.0% vs. 90.5% predicted;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.014); however, DLCO was measured in only 48.4% versus 70.4% of South Asian and Arab patients, respectively (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.014), limiting interpretation. Asymptomatic presentation increased from 22% in 2015\u20132019 to 62% in 2020\u20132021 and 42% in 2022\u20132023.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>In Qatar's first pulmonary sarcoidosis cohort, disease was predominantly Stage II, with high EBUS\u2010TBNA yield. South Asians had more constitutional symptoms; lower DLCO was observed but requires prospective confirmation. Pandemic\u2010era imaging may have increased incidental detection.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/crj.70229","type":"journal-article","created":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T07:51:08Z","timestamp":1788508268000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Pulmonary Sarcoidosis in Qatar: Clinical Features, Diagnostic Profile and Treatment Patterns in a Multi\u2010Ethnic Population"],"prefix":"10.1111","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8781-4071","authenticated-orcid":false,"given":"Aasir M.","family":"Suliman","sequence":"first","affiliation":[{"name":"Pulmonology Department Hamad Medical Corporation  Doha Qatar"},{"name":"Department of Clinical Medicine, College of Medicine, QU Health Qatar University  Doha Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4020-8204","authenticated-orcid":false,"given":"Mousa","family":"Hussein","sequence":"additional","affiliation":[{"name":"Pulmonology Department Hamad Medical Corporation  Doha Qatar"},{"name":"Department of Clinical Medicine, College of Medicine, QU Health Qatar University  Doha Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-2582-7330","authenticated-orcid":false,"given":"Hassan","family":"Magboul","sequence":"additional","affiliation":[{"name":"Internal Medicine Department Hamad Medical Corporation  Doha Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmed A.","family":"Alsayed","sequence":"additional","affiliation":[{"name":"Internal Medicine Department Hamad Medical Corporation  Doha 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