Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are obtained . The lungs appear clear bilaterally without focal consolidation , effusion , or pneumothorax . Heart size is mildly enlarged . Mediastinal contour is unremarkable . No signs of CHF . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute intrathoracic process . Mild cardiomegaly .