Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Streaky atelectasis is noted in both lung bases . There is a trace left pleural effusion , new in the interval . No focal consolidation or pneumothorax is present . There are no acute osseous abnormalities . No subdiaphragmatic free air is present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .