Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to prior study , there is new left basilar opacity , projecting posterior to the major fissure on the lateral view , compatible with a left lower lobe pneumonia . There is no associated effusion . Possible additional opacity is noted on the PA view at the right lung base . The remainder of the lungs are well aerated . Hilar and cardiomediastinal contours are normal . There is no pulmonary vascular congestion or edema . No free air is seen under the hemidiaphragm , and there are no acute osseous abnormalities .
    OUTPUT:
    
Left lower lobe pneumonia . Possible additional right basilar opacity . Dr . ___ was informed of these finding at 3 p .m . on ___ by Dr . ___ .