CTICasesMucinous Adenocarcinoma
Imaging findings
A 40-year-old male presented with a large, mass-like consolidation in the right hilum. Imaging showed soft tissue encasing the bronchus, narrowing of the airway, and inflammatory debris (tree-in-bud appearance) extending into the surrounding airways. Initially suspected to be an infectious process, including blastomycosis, pathology confirmed a mucinous adenocarcinoma of the signet ring type.
Key takeaways
Mucinous adenocarcinoma, especially the signet ring type, can present with mass-like consolidations and inflammatory airway changes that closely mimic infectious pneumonia. It should remain in the differential for non-resolving consolidations.
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