Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate a left apical opacity present on PET - CT from ___ , likely reflecting post radiation changes . There is are no focal consolidations to suggest pneumonia . Cardiac and mediastinal silhouette is normal . There is no pneumothorax or pleural effusion . Surgical clips project over the right lung base .
    OUTPUT:
    
No evidence of pneumonia .