Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . Mildly increased interstitial markings likely reflect mild chronic interstitial disease . Atelectasis is seen in the lung bases bilaterally . Trace bilateral pleural effusions likely present . There is no pneumothorax . The cardiomediastinal silhouette is similar to prior exam . Median sternotomy wires and mediastinal clips are noted .
    OUTPUT:
    
Trace bilateral pleural effusions are likely present . Otherwise , no acute cardiopulmonary process . Minimal change from prior exam .