CTICasesPost-Obstructive Pneumonia due to Adenocarcinoma
Imaging findings
Chest radiographs show right upper lobe consolidation initially interpreted as simple pneumonia. Repeat radiograph two months later shows worsening consolidation and new right paratracheal lymphadenopathy. CT demonstrates a right upper lobe adenocarcinoma causing airway obstruction and post-obstructive pneumonia.
Key takeaways
Pneumonia that fails to resolve or is associated with hilar/mediastinal lymphadenopathy should prompt evaluation for an underlying obstructing lesion, such as lung cancer, particularly in older patients.
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