Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . The heart appears mildly enlarged and the aorta appears slightly unfolded . The lungs appear clear bilaterally without definite signs of pneumonia or CHF . No pleural effusion or pneumothorax is seen . Bony structures appear intact .
    OUTPUT:
    
No acute intrathoracic process . Mild cardiomegaly .