Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single views were obtained with patient in sitting semi-upright position . Comparison is made with the next preceding similar study of ___ . The heart size remains normal and no configurational abnormalities are identified . The pulmonary vasculature is not congested . Relatively low positioned and flattened diaphragms are again identified and indicate COPD and emphysematous changes . Irregular pulmonary vascular distribution in the periphery is also seen and some linear densities raise the possibility of interstitial fibrosis or scar formations . The previously existing and poorly identified right internal jugular vein approach central venous line has been exchanged to a wider bore catheter that is now identified to reach well into the lower SVC . There are now several poorly delineated infiltrates in the left lung both in the upper lung field as well as in perihilar position and on the base . These densities are compatible with multiple aspiration infiltrates in this patient . Noteworthy is that on the previous examination some of these densities were already detectable albeit not to the same extent as they exist now . A previously suspected retrocardiac density on the right base has not developed further but can not be evaluated in detail on this single plain chest examination .
    OUTPUT:
    
Multiple parenchymal densities in the left hemithorax compatible with aspiration pneumonitis .