Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient 's condition require examination in sitting upright position using AP frontal and left lateral views . Comparison is made with the next preceding similar study of ___ . Size and configuration unchanged . Again moderate general widening of the thoracic aorta with some calcium deposits in the wall as before . Pulmonary vasculature is not congested presently . The on previous examination identified scattered small patchy basal infiltrates have regressed , but have not resolved completely . The lateral pleural sinuses are free , however , the right - sided posterior pleural sinus appears to be somewhat blunted as seen on the lateral view . No new pulmonary abnormalities are identified .
    OUTPUT:
    
Slight regression of previously identified bilateral basal scattered infiltrates .