CTICasesScar Adenocarcinoma
Imaging findings
Serial chest CTs show a right upper lobe consolidation and scarring from a previous severe pneumonia. Over several years, the scarred area develops increased density, progressive consolidation, and volume loss with associated extrapleural fat thickening, representing a scar-associated adenocarcinoma.
Key takeaways
Primary lung adenocarcinoma can arise in areas of chronic parenchymal scarring or fibrosis (scar carcinoma). Any new consolidation, progressive volume loss, or increased density within a stable, long-standing scar should raise suspicion for malignancy.
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