Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is minimal left base atelectasis . There is persistent blunting of the posterior costophrenic angle . This may be due to very trace pleural effusion . No focal consolidation or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Stable minimal blunting of the posterior costophrenic angles may be due to trace pleural effusions . No significant interval change .