Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright chest radiograph obtained . The heart is mildly enlarged . Lung volumes are low . There is no overt sign of pneumonia or pulmonary edema . No large effusion or pneumothorax seen . Mediastinal contour appears normal . Bony structures intact , though high - riding right humeral head suggests chronic rotator cuff injury .
    OUTPUT:
    
Mild cardiomegaly . Otherwise , normal .