Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear areas of fibrosis or scarring in the upper lung zones is unchanged dating back to ___ with relative elevation of the bilateral hila , consistent with a history of sarcoid . There is no pleural effusion , pulmonary edema or focal opacity concerning for pneumonia . The heart is normal in size .
    OUTPUT:
    
No evidence of pneumonia .