Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . Streaky opacity is new at the left base but suggestive only of minor atelectasis . Very mild vascular congestion is suspected and perhaps somewhat increased . Otherwise , the lungs remain clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Findings suggest minimal vascular congestion . No definite focal opacity suggestive of pneumonia ; left basilar opacities probably due to minor atelectasis .