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 ___ . Heart size appears unchanged paying attention to difference between PA and AP frontal views . The pulmonary vasculature is not more congested than it was before . Significantly lower inspirational effort explains the relatively high - positioned diaphragms in comparison with the previous study . This results in a somewhat more crowded appearance of the pulmonary vasculature , but no evidence of local discrete pulmonary infiltrates can be established on this single view chest examination . Also , the lateral pleural sinuses remain free from any fluid accumulation . Callus formations are noted overlying the previously described lower left hemithorax rib fractures level ___ 7 and 8 . No pneumothorax is identified .
    OUTPUT:
    
No evidence of new pulmonary infiltrations on this portable examination in comparison with PA and lateral chest examination of four days ago .