Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild to moderate cardiomegaly is unchanged . The aorta is diffusely calcified and tortuous , similar compared to the prior exam . Mediastinal and hilar contours are unchanged . Evaluation of the lung apices is limited due to the patient 's chin and soft tissues of the neck projecting over this region . Lung volumes are low . There is crowding of the bronchovascular structures but no overt pulmonary edema is present . No focal consolidation , pleural effusion or pneumothorax is clearly identified . Mild interstitial abnormality within the lung bases as well as within the right upper lung field is similar compared to the prior exam and may reflect chronic changes . No acute osseous abnormalities seen .
    OUTPUT:
    
Low lung volumes . No acute cardiopulmonary abnormality .