Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear aside from a slowly resolving focal ovoid opacification in the right upper lobe which corresponds to a previous lung abscess , better delineated on CT chest dated ___ . There is no evidence of pneumonia , pneumothorax , or pleural effusion . Cardiac silhouette is normal in size .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Right upper lobe focal opacity is decreased in size from prior , compatible with a slowly resolving abscess .