Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The cardiac silhouette is moderately enlarged . Calcifications are noted in the aortic arch . The thoracic aorta appears tortuous . The lungs are well expanded and clear . Pulmonary vascularity is within normal limits . There is no pleural effusion or pneumothorax . Four relatively linear small metallic densities project over the right lung .
    OUTPUT:
    
Moderate cardiomegaly . No acute cardiopulmonary process .