Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky opacity projecting over the left lung base most likely represents atelectasis or overlap of structures , much less likely consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Streaky opacity projecting over the left lung base most likely represents atelectasis or overlap of structures , much less likely consolidation .