Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated but clear without consolidation or edema . Moderate cardiac enlargement is grossly unchanged given differences in positioning . Prosthetic valve is noted as well as median sternotomy wires . Right chest wall dual lumen central venous catheter is in stable position . No acute osseous abnormalities . Vascular stent projects over left axillary region .
    OUTPUT:
    
Cardiomegaly without superimposed acute cardiopulmonary process .