Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are within normal limits . Pulmonary vasculature is normal . Previously noted diffuse thin walled cysts within the lung parenchyma are better appreciated on the prior per PET - CT . No focal consolidation , pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .