Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are noted with secondary crowding of the bronchovascular markings . Moderate enlargement of the cardiac silhouette which is likely due to underlying cardiomegaly although this is accentuated by portable technique and low inspiratory effort . No acute osseous abnormalities identified .
    OUTPUT:
    
Cardiomegaly without superimposed acute cardiopulmonary process .