Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding PA and lateral chest examination of ___ . The heart size is normal . No configurational abnormality exists . Mild widening and elongation of the thoracic aorta , but unchanged in comparison with previous study . Remarkable overall changes since the previous study is mild degree of volume loss of the upper half right - sided hemithorax , apparently related to multiple rib fractures ( ___ 4 , 5 , 6 , 7 and possibly 8 ) now already demonstrating some increased callus formation and mild degree of a shortening . There are no new pulmonary abnormalities in this area , although some decrease in volume be note , following this , apparently significant chest trauma . Assuming that the trauma did not involve the left hemithorax , there are some new changes on the left side in the form of poorly delineated parenchymal densities overlying the fourth rib anteriorly , partially obliterating the cardiac left lateral contour suggestive of a pulmonary parenchymal infiltrate in the lingula . Comparison with the old study also suggests some new densities on the right lung base resulting in a minor parenchymal infiltrate in the right lower lobe posterior segment . These densities show matching findings on the lateral view .
    OUTPUT:
    
Significant chest trauma in right side . Observe that next previous examination of ___ did not show similar changes . Does patient have history of severe thorax trauma during that time ? Acute parenchymal infiltrates in left upper lobe lingula as well as right lower lobe posterior segment are probably new . . Followup chest examination of the described new acute parenchymal infiltrates is recommended after treatment .