Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 views were obtained of the chest . The lungs are somewhat low in volume with right lower lung opacity , slightly less conspicuous than the prior study . There is no pleural effusion or pneumothorax . The heart and mediastinal contours are unchanged with multiple coronary stents noted .
    OUTPUT:
    
Slightly decreased conspicuity of right lower lung opacity , which again likely reflects atelectasis , though infection remains a consideration .