CTICasesChronic HP with Peribronchiolar Metaplasia
Imaging findings
Chest CT shows non-basal predominant interstitial fibrosis with traction bronchiectasis located away from the pleural surfaces and sparing of the costophrenic angles. Biopsy confirmed chronic HP with peribronchiolar metaplasia and giant cells.
Key takeaways
Sparing of the subpleural lung bases and the presence of traction bronchiectasis centered away from the pleura are key radiographic clues that point to chronic HP rather than UIP.
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