Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are decreased lung volumes , resulting in crowding of the bronchovascular structures . The right hemidiaphragm is noted to be elevated with respect to the left . There is appearant volume loss of the right , medial lung base . There is no focal consolidation , pleural effusion , pneumothorax , or frank pulmonary edema identified . There appears to be mild cardiomegaly , although this may be exaggerated by the patient 's low lung volumes and by the AP projection . Mediastinal contours are normal .
    OUTPUT:
    
1 . Medial right lung base volume loss , likely representing atelectasis . 2 . Elevated right - sided hemidiaphragm .