Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate mild cardiomegaly and well - aerated lungs which are clear . A linear opacity in the right upper lung likely represents scarring or postsurgical changes . Also noted are surgical clips which would be consistent with prior thyroid surgery . There is no focal consolidation or pulmonary edema . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Clear lungs without focal consolidation concerning for pneumonia .