CTICasesIdiopathic Follicular Bronchiolitis
Imaging findings
Chest CT shows diffuse, centrilobular nodules throughout both lungs. The patient developed symptoms after returning from a trip to Japan. Surgical lung biopsy confirmed follicular bronchiolitis without systemic rheumatologic disease.
Key takeaways
Follicular bronchiolitis is characterized by lymphoid hyperplasia along the bronchovascular bundles, presenting as centrilobular nodules. It can be secondary to rheumatologic disease or present as an idiopathic post-infectious process.
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