Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Patient is slightly rotated to his left side somewhat limiting assessment . The lungs appear clear without focal consolidation , large effusion or pneumothorax . The heart appears mildly enlarged mediastinal contour appears normal . Bony structures are intact .
    OUTPUT:
    
Mild cardiomegaly . No signs of pneumonia or edema .