Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is unremarkable . Prominence of the central pulmonary vasculature is similar to prior examination . Lungs are clear . Pleural surfaces are clear without effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Mild central pulmonary vascular engorgement is similar to prior examination .