Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left costophrenic angle is excluded from the field of view . Chronic elevation of the right hemidiaphragm is noted with platelike right basilar atelectasis . Cardiac and mediastinal contours are unchanged , with the heart size appearing mildly enlarged . The aorta remains tortuous . Left lung is grossly clear . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
Chronic elevation of the right hemidiaphragm with adjacent subsegmental atelectasis in the right lung base .