CTICasesAdenocarcinoma
Imaging findings
Chest radiograph shows a thin, curvilinear, scar-like opacity in the superior segment of the left lower lobe. CT chest confirms a very flat, linear lesion with traction bronchiectasis and fissural distortion resembling a scar, but PET CT demonstrated focal metabolic activity in the lateral portion. Biopsy confirmed adenocarcinoma.
Key takeaways
Primary pulmonary adenocarcinoma can rarely manifest as a flat, linear, or curvilinear opacity mimicking a scar or focal cicatricial atelectasis. Features that suggest malignancy include focal soft tissue thickness, metabolic activity on PET, progressive airway distortion, and desmoplastic pleural pulling.
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