Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate cardiomegaly . Lung volumes are low without evidence of confluent consolidation large effusion or frank pulmonary edema . Prosthetic aortic valve and median sternotomy wires are noted . No acute osseous abnormalities .
    OUTPUT:
    
Cardiomegaly without superimposed acute cardiopulmonary process .