Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Lung volumes are low . There is apparent cardiomegaly though the low lung volumes somewhat limit the assessment . There is no large effusion or pneumothorax . No convincing signs of pneumonia or overt edema . Please note evaluation is limited due to low lung volumes . Bony structures are intact . Mediastinal contour is normal .
    OUTPUT:
    
Limited exam with probable cardiomegaly . No overt signs of pneumonia or edema .