Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . Right basal opacification is not accompanied by pulmonary edema elsewhere . Cardiac size is moderately enlarged , with a prominent right atrium . There is no pleural effusion or pneumothorax . Atherosclerotic calcifications of the aortic knob are present . A hiatus hernia is present .
    OUTPUT:
    
1 . Probable right lower lobe pneumonia , could be active or residual infection . 2 . Moderate cardiomegaly with prominent right atrium , but no pulmonary edema . 3 . Hiatus hernia .