Simple CT score identifies UIP pathology and predicts progression in smokers with fibrotic IIP

A 3-point CT score (upper-lobe irregular lines, pleural surface irregularity, basal reticulation) detected histopathological usual interstitial pneumonia (UIP) features with AUCs of 0.83 and 0.89 in two cohorts, and independently predicted disease progression at 1 and 2 years.

• The U-I-P score was developed in a derivation cohort of 242 smokers with fibrotic idiopathic interstitial pneumonia (IIP) and validated in an independent cohort of 126 patients.
• Histopathological UIP features were present in a high proportion of both cohorts (86% and 87%), and the U-I-P score independently predicted their presence.
• This score offers a practical imaging biomarker when CT patterns are atypical for UIP due to coexisting emphysema or smoking-related fibrosis.

Automated summary

RadPigeon summaries are original and for information only. They are not clinical advice.