Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate clear lungs bilaterally . No focal consolidation concerning for pneumonia is identified . There is no pleural effusion . Cardiomediastinal and hilar contours are within normal limits , stable in appearance when compared to prior chest radiograph dated ___ . A round opacity at the left apex is again identified which may reflect a pulmonary nodule .
    OUTPUT:
    
1 . Again identified is a round opacity at the left apex which may reflect a pulmonary nodule , unchanged . Lordotic views on a non emergent basis are recommended for further characterization . 2 . No convincing focal consolidation concerning for pneumonia .