Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There is a focal opacity with convex margins along the right lateral hemithorax concerning for a pleural based lesion . There is mild elevation of the left hemidiaphragm , with linear densities across the left lower lung field as well as more patchy opacification in the left lower lobe . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Left lower lobe linear opacity with a more vague patchy opacity is concerning for a left lower lobe pneumonia with an underlying area of scarring . 2 . Focal pleural based opacity in the right lateral hemithorax for which comparison with prior exams or dedicated CT is recommended . ED QA nurses were emailed on ___ regarding the need for follow up imaging or comparison to prior exams .