Respiratory bronchiolitis-associated interstitial lung disease with obvious paraseptal emphysema

Respiratory bronchiolitis-associated interstitial lung disease (RBILD) is a distinct clinical-pathological disease described almost exclusively among cigarette smokers. Normally, the most common manifestations in computed tomography findings of RBILD are central and peripheral bronchial wall thickening, centrilobular nodules, ground glass opacity, and mild centrilobular emphysema in the upper lobes. In this study, we report a current smoker presenting with diffuse ground glass opacity in the entire lungs along with paraseptal emphysema. This case differs from past reports where obvious paraseptal emphysema in upper lung is seldom reported.