Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation or edema . Blunting of the posterior costophrenic angles suggests trace bilateral effusions . Cardiomediastinal silhouette is stable . Mild moderate hiatal hernia is noted on the lateral view . Compression deformities in the mid to lower thoracic spine are unchanged . Median sternotomy wires and mediastinal clips again noted .
    OUTPUT:
    
Small bilateral pleural effusions without other acute cardiopulmonary process .