Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no consolidation or pneumothorax . Blunting of the left posterior costophrenic angle is noted , potentially due to trace pleural effusion Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Possible trace left pleural effusion . Otherwise unremarkable without acute cardiopulmonary process .