Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest show clear lungs without focal consolidation , pleural effusion , or pneumothorax . The previously seen opacity projecting at the left lung base overlying the posterior ninth rib is no longer seen . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits .
    OUTPUT:
    
No pulmonary or osseous lesion identified on today 's exam . No acute cardiopulmonary process .