Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged , allowing for differences in technique . A vague peripheral opacity projecting over the right lung apex also appears unchanged . Streaky opacities in the right lower lobe are most consistent with minor atelectasis . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Right basilar opacity suggesting minor atelectasis . No convincing evidence for pneumonia or congestive heart failure .