{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,29]],"date-time":"2026-08-29T02:55:12Z","timestamp":1787972112802,"version":"build-2784847793"},"reference-count":50,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2010,12,28]],"date-time":"2010-12-28T00:00:00Z","timestamp":1293494400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthritis &amp; Rheumatism"],"published-print":{"date-parts":[[2011,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>Connective tissue diseases (CTDs) are associated with several interstitial lung diseases. The aim of this study was to describe the recently individualized syndrome of combined pulmonary fibrosis and emphysema (CPFE) in a population of patients with CTD.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>In this multicenter study, we retrospectively investigated data from patients with CTD who also have CPFE. The demographic characteristics of the patients, the results of pulmonary function testing, high\u2010resolution computed tomography, lung biopsy, and treatment, and the outcomes of the patients were analyzed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Data from 34 patients with CTD who were followed up for a mean \u00b1 SD duration of 8.3 \u00b1 7.0 years were analyzed. Eighteen of the patients had rheumatoid arthritis (RA), 10 had systemic sclerosis (SSc), 4 had mixed or overlap CTD, and 2 had other CTDs. The mean \u00b1 SD age of the patients was 57 \u00b1 11 years, 23 were men, and 30 were current or former smokers. High\u2010resolution computed tomography revealed emphysema of the upper lung zones and pulmonary fibrosis of the lower zones in all patients, and all patients exhibited dyspnea during exercise. Moderately impaired pulmonary function test results and markedly reduced carbon monoxide transfer capacity were observed. Five patients with SSc exhibited pulmonary hypertension. Four patients died during followup. Patients with CTD and CPFE were significantly younger than an historical control group of patients with idiopathic CPFE and more frequently were female. In addition, patients with CTD and CPFE had higher lung volumes, lower diffusion capacity, higher pulmonary pressures, and more frequently were male than those with CTD and lung fibrosis without emphysema.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>CPFE warrants inclusion as a novel, distinct pulmonary manifestation within the spectrum of CTD\u2010associated lung diseases in smokers or former smokers, especially in patients with RA or SSc.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/art.30077","type":"journal-article","created":{"date-parts":[[2010,10,8]],"date-time":"2010-10-08T10:23:34Z","timestamp":1286533414000},"page":"295-304","source":"Crossref","is-referenced-by-count":170,"title":["Combined pulmonary fibrosis and emphysema syndrome in connective tissue 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