CTICasesDiffuse Invasive Mucinous Adenocarcinoma
Imaging findings
Chest radiograph and CT demonstrate bilateral, symmetric, peripheral, and dense consolidative opacities that mimic chronic eosinophilic pneumonia. The consolidation is of low attenuation on soft tissue windows, representing mucinous and non-mucinous invasive mixed adenocarcinoma.
Key takeaways
Invasive mucinous adenocarcinoma (formerly mucinous bronchoalveolar carcinoma) of the lung can present with lobar or multi-lobar consolidation mimicking pneumonia. The presence of low attenuation within the consolidation (due to mucin production) is a key diagnostic clue for mucinous adenocarcinoma.
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