Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Tracheostomy tube projects over the superior mediastinum with an overlying oxygen mask in place . There is again noted to be mild elevation of the right hemidiaphragm . Mild pleural thickening along the lateral aspect of the right lung is again noted . There is mild basilar atelectasis noted bilaterally . No convincing signs of pneumonia or edema . No large effusion or pneumothorax is seen . The cardiomediastinal silhouette appears stable . No acute bony injuries .
    OUTPUT:
    
Overall no change . No definite signs of pneumonia .