Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky opacities at the left lung base most likely represents atelectasis . There is otherwise no focal consolidation . Mild pulmonary vascular congestion is noted . No pleural effusion or pneumothorax . Heart size is mildly enlarged . No acute osseous abnormalities identified .
    OUTPUT:
    
Mild pulmonary vascular congestion .