Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Comparison is made with the next preceding PA and lateral chest examination of ___ . The heart size is unchanged , paying attention to differences in examination technique . No configurational abnormality is seen . The pulmonary vasculature is not congested . No new acute infiltrates are present . On previous examination , suspected left lower lobe posterior consolidation seen on lateral radiography can not be confirmed .
    OUTPUT:
    
Stable chest findings . No new abnormalities identified .