Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . There is slight prominence of the central pulmonary vasculature .
    OUTPUT:
    
Mild prominence of the central pulmonary vasculature , left main pulmonary artery . Clear lungs .