Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate the lungs are well expanded and clear . A slight contour abnormality is noted posterior to the left ventricle on the lateral view , in the expected location of the inferior vena cava . Otherwise , the cardiomediastinal silhouette is unremarkable . The heart is normal in size . There is no pleural effusion , pneumothorax , pulmonary edema , or focal airspace consolidation .
    OUTPUT:
    
No acute cardiopulmonary process . Contour abnormality along the inferior heart border , posterior to the left ventricle on the lateral view , is likely due to pericardial cyst or herniation of subdiaphragmatic fat . Correlation with prior chest radiographs is recommended if available . If no prior imaging is available , follow up PA and lateral radiographs are recommended in 3 months to ensure stability .