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  • Title: Clinical Features and Outcomes of Combined Pulmonary Fibrosis and Emphysema After Lung Transplantation.
    Author: Takahashi T, Terada Y, Pasque MK, Liu J, Byers DE, Witt CA, Nava RG, Puri V, Kozower BD, Meyers BF, Kreisel D, Patterson GA, Hachem RR.
    Journal: Chest; 2021 Nov; 160(5):1743-1750. PubMed ID: 34186034.
    Abstract:
    BACKGROUND: Combined pulmonary fibrosis and emphysema (CPFE) is recognized as a characteristic syndrome of smoking-related interstitial lung disease that has a worse prognosis than idiopathic pulmonary fibrosis (IPF). However, outcomes after lung transplantation for CPFE have not been reported. The aim of this study is to describe the clinical features and outcomes of CPFE after lung transplantation. RESEARCH QUESTION: What are the clinical features and outcomes of CPFE after lung transplantation? STUDY DESIGN AND METHODS: This is a single-center retrospective cohort study of patients with CPFE and IPF who underwent lung transplantation at our center between January 2011 and December 2016. We defined CPFE as ≥10% emphysema in the upper lung fields combined with fibrosis on high-resolution CT scan. We characterized the clinical features of patients with CPFE and compared their outcomes after lung transplantation with those with IPF. RESULTS: Twenty-seven of 172 (16%) patients with IPF met criteria for CPFE. Severe pulmonary hypertension was present in 16 of 27 (59%) patients with CPFE. On logistic regression analysis, CPFE was significantly associated with primary graft dysfunction (PGD) grade 3 (OR, 3.14; 95% CI, 1.18-8.37; P = .02). On competing risk regression analysis, CPFE was associated with acute cellular rejection (ACR) grade ≥ A2, and chronic lung allograft dysfunction (CLAD) (hazard ratio [HR], 1.89; 95% CI, 1.10-3.25; P = .02; HR, 1.96; 95% CI, 1.02-3.77; P = .04, respectively). Five-year survival was 79.0% for the CPFE group and 75.4% for the IPF group (log-rank P = .684). INTERPRETATION: After transplantation, patients with CPFE were more likely to develop PGD, ACR, and CLAD compared with those with IPF. However, survival was not significantly different between the two groups.
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