Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient 's physical condition required examination in sitting semi-upright position using AP frontal and left lateral views . Comparison is made with the next preceding single view chest examination of ___ . Heart size appears unchanged paying attention to geometric distortion with patient in sitting position . No pulmonary vascular congestion . On the right lung base , a new infiltrate is seen coinciding with blunting of the right lateral pleural sinus . Lateral view locates the parenchymal density into the posterior segment of the right lower lobe . Amount of pleural effusion appears to be very small as it only blunts mildly the posterior pleural sinus . Drooping head and chin obscure apical area on frontal view and makes it difficult to exclude any significant pneumothorax . A significant pneumothorax , however , is unlikely considering the normal distribution of pulmonary vasculature in the mid portion of the lung .
    OUTPUT:
    
Parenchymal infiltrate in right lower lobe posterior segment . Probably aspiration pneumonitis in this mentally compromised patient . Referring physician , ___ . ___ , was paged at 3 : 10 p .m .