Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . There is a new left pleural effusion , which is small in overall size . There is probable left basal atelectasis . The right lung appears clear . The cardiomediastinal silhouette appears grossly stable from prior . No pneumothorax is seen . The imaged osseous structures are intact .
    OUTPUT:
    
Small left pleural effusion with left basilar atelectasis .