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Introduction: Interstitial lung diseases associated with systemic autoimmune diseases (ILD-SAD) can progress to a fibrotic form that can benefit from antifibrotic treatment. The aim of the study is to describe a cohort of patients with ILD-SAD who manifest progressive pulmonary fibrosis treated with antifibrotics., Methods: Single-centre retrospective observational study from a tertiary care hospital on a cohort of patients with ILD-SAD with progressive pulmonary fibrosis evaluated in a joint pulmonology and rheumatology clinic that initiated treatment with antifibrotic drugs between 01/01/2019 and 01/12/2021. Clinical characteristics were analysed. The evolution of pulmonary function test and adverse effects during treatment were described., Results: 18 patients were included. The mean age was 66.7 ± 12.7 years, with a higher frequency of females (66.7%). Systemic sclerosis (SS) was the most frequent systemic autoimmune disease (36.8%). The majority of patients were receiving systemic glucocorticoid treatment (88.9%), 72.2% of patients were receiving treatment with disease-modifying drugs, the most frequent being mycophenolate mofetil (38.9%), and 22.2% with rituximab. Functional stability was observed after the start of antifibrotic treatment. Two patients died during follow-up, one due to progression of ILD., Conclusion: Our study suggests a beneficial effect of antifibrotic treatment added to immunomodulatory treatment in patients with fibrotic ILD-SAD in real life. In our cohort, patients with ILD-SAD with progressive fibrosing involvement show functional stability after starting antifibrotic treatment. Treatment tolerance was relatively good with a side effect profile similar to that described in the medical literature., (Copyright © 2023. Published by Elsevier España, S.L.U.)

Case Presentation: An 84-year-old man with an active smoking habit presented to the ED with dyspnea, hemoptysis, and thick phlegm that was difficult to clear. He reported no weight loss, no fever, and no chest pain or dysphonia. He denied both international travel and previous contact with confirmed cases of TB or SARS-CoV-2. He had no known occupational exposures. The patient's personal history included a resolved complete atrioventricular block that required a permanent pacemaker, moderate-to-severe COPD, rheumatoid arthritis (treated with oral prednisone, 2.5 mg/d) and B-chronic lymphocytic leukemia (treated with methotrexate and prophylactic oral supplements of ferrous sulfate). Moreover, he was in medical follow up because of a peptic ulcer, atrophic gastritis, and colonic diverticulosis. The patient also had a history of thoracic surgery after an episode of acute mediastinitis from an odontogenic infection, which required ICU management and temporal tracheostomy., (Copyright © 2021 American College of Chest Physicians. Published by Elsevier Inc. All rights reserved.)