Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heterogeneous right lower lung opacities are not significantly changed compared to the prior study from ___ , likely subsegmental atelectasis . There is also an area of atelectasis in the right mid lung , not significantly changed . The left lung is clear . Mild cardiomegaly is unchanged . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . Healing right - sided rib fractures are noted . Deformity of the manubrium is redemonstrated .
    OUTPUT:
    
1 . No acute cardiac or pulmonary findings . Right mid and lower lung subsegmental atelectasis , not significantly changed . 2 . Unchanged mild cardiomegaly .