Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior radiograph , the right lower lobe opacity is markedly more extensive . There is heterogeneous opacification at the left base , which partially obliterates the contour of the left hemidiaphragm . Lungs are otherwise clear . There is no pneumothorax . The hila are and cardiomediastinal contours are normal . Pulmonary vascularity is normal .
    OUTPUT:
    
Large growing right lower lobe pneumonia . New left lower lobe pneumonia , less likely pleural effusion and atelectasis alone . The pattern is concerning for an aspiration etiology . Findings were communicated to ___ by Dr . ___ by telephone on ___ at 11 :13 .