Lung abscess

Postanterior (A) and lateral (B) chest radiographs show dense right upper airspace consolidation. Contrast-enhanced computed tomography (CT) scan (C) demonstrates large focal area of decreased attentuation with rim enhancement (arrow) characteristic of lung abscess. Postanterior (D) and lateral (E) chest radiographs three weeks later show decreased size of lung abscess and development of cavitation with fluid level (arrows). The patient was a 43-year-old woman with lung abscess secondary to Haemophilus aphrophilus.