Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a peripheral , pleural - based opacity in the right midlung laterally . The the lungs are otherwise clear of focal consolidation or effusion . The cardiac silhouette is within normal limits . The thoracic aorta is tortuous . Increased retrocardiac opacity is compatible with a moderate hiatal hernia . No acute osseous abnormalities identified .
    OUTPUT:
    
Small right midlung opacity laterally could represent atelectasis or scar . Given patient 's history of suspected malignancy , however , consider cross - sectional imaging to further characterize which does not necessarily need to be done on an urgent basis . Moderate hiatal hernia .