Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is unchanged . The mediastinal and hilar contours are similar . Mild atherosclerotic calcifications are noted at the aortic knob . Pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is identified . Minimal streaky and linear opacities in the right lung base likely reflect areas of atelectasis . Blunting of the right costophrenic angle likely reflects a small amount of pleural thickening , not changed in the interval . No pneumothorax is seen . There are mild degenerative changes noted in the thoracic spine .
    OUTPUT:
    
Patchy right basilar opacity likely reflects atelectasis . Blunting of the right costophrenic angle likely reflects chronic pleural thickening , not changed in the interval .