The chest radiograph shows an ill-defined focal opacity in the left lower lung zone.
Coronal-reformatted CT image done a few days after the chest radiograph reveals an irregular-shaped mass with internal lucencies that represent air bronchiologram and cavity. Desmoplastic reaction is also visualized.
- Well-differentiated adenocarcinoma of the lung
- Lepidic growth meaning spread of neoplastic cells in peripheral air space without destroying lung architecture
- On CT, it can be a nodule, mass, consolidation (segmental or lobar), multi centric or diffuse disease
- Important CT feature is internal radiolucencies but this is overlapping with other diseases
- Lucencies can represent air bronchiologram, bubbles of pseudocavitation, cavitation, serpentine, alveologram or thin-walled cystic lesions
- Bubbly lucencies or pseudocavitation is believed to be non-involved lobules, paracicatricial emphysema and fibrosis with honeycombing and localized bronchiectasis.
Our case: BAC with air bronchiologram and cavity.
Gaeta M, et al. Radiolucencies and cavitation in bronchioloalveolar carcinoma: CT-pathologic correlation. Eur Radiol 1999;9:55-59.