SLC2A1 and idiopathic pulmonary fibrosis: In this study, we investigated the hypothesis that MVD and macrophage phenotype/glucose transporter 1 (GLUT-1) expression on immunohistochemistry were potential predictors of mortality in fILD and examined the correlation between [18F]FDG uptake on PET imaging and angiogenesis and macrophage subsets for different histologic presentations of disease (usual interstitial pneumonia [UIP] vs. non-UIP).