Lung Biopsy to Diagnose Fibrotic Interstitial Lung Disease

Fibrotic interstitial lung disease (fILD) is an umbrella term that includes primary and secondary processes with various histologies that often have overlapping clinical and radiographic features. Diagnosing fILD can be challenging, and when more information would have therapeutic implications, biopsy is considered. This state-of-the-art document, created by an international multidisciplinary group, reviews biopsy indications and contraindications, procedural techniques, and patient perspectives.