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Related Experiment Video

Updated: Mar 25, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
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Association Between Interstitial Lung Abnormalities and All-Cause Mortality.

Rachel K Putman1, Hiroto Hatabu2, Tetsuro Araki3

  • 1Pulmonary and Critical Care Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.

JAMA
|February 17, 2016
PubMed
Summary
This summary is machine-generated.

Interstitial lung abnormalities, detected via CT scans, are linked to a higher risk of all-cause mortality. This finding highlights the potential prognostic significance of these lung findings.

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Area of Science:

  • Pulmonary Medicine
  • Radiology
  • Epidemiology

Background:

  • Interstitial lung abnormalities (ILAs) are increasingly recognized on chest computed tomography (CT) scans.
  • Previous research linked ILAs to reduced lung function metrics.
  • The association between ILAs and mortality remained uninvestigated.

Purpose of the Study:

  • To determine if interstitial lung abnormalities are associated with an increased risk of all-cause mortality.

Main Methods:

  • Analysis of prospective cohort data from four large studies: Framingham Heart Study (FHS), Age Gene/Environment Susceptibility (AGES)-Reykjavik, COPDGene, and Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints (ECLIPSE).
  • Chest CT scans were used to identify the presence of interstitial lung abnormalities.
  • All-cause mortality was tracked over a median follow-up period of 3 to 9 years.

Main Results:

  • Interstitial lung abnormalities were identified in 7-9% of participants across the four cohorts.
  • Participants with ILAs exhibited a higher rate of all-cause mortality compared to those without ILAs.
  • Adjusted analyses revealed a significantly increased risk of death associated with ILAs in all four cohorts (HRs ranging from 1.3 to 2.7).
  • In the AGES-Reykjavik cohort, increased mortality risk was linked to respiratory disease deaths, particularly pulmonary fibrosis.

Conclusions:

  • Interstitial lung abnormalities are associated with a significantly greater risk of all-cause mortality across diverse populations.
  • These findings suggest ILAs may serve as an important prognostic marker.
  • Further research is warranted to elucidate the clinical implications and underlying mechanisms of this association.