Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette . There are severe fibrotic changes , left greater than right . There is no evidence of lymphadenopathy or definite acute pneumonia . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Severe fibrotic changes , left greater than right . The differential is substantial , and the patient should be evaluated with CT of the chest if a precise diagnosis is unknown . 2 . No definite acute pneumonia . These findings were entered into the critical communications dashboard by Dr . ___ at ___ on ___ .