Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new confluent opacity has developed in the right retrocardiac region , partially obscuring the right hemidiaphragm contour medially . There is also a subtle new area of opacity at the left base . Considering clinical concern for aspiration , these findings could represent acute aspiration event . Lungs are otherwise clear except for a questionable small 1 - cm nodular opacity overlying the ninth left posterior rib level . Cardiomediastinal contours are stable allowing for slight patient rotation .
    OUTPUT:
    
New bibasilar opacities , which could be due to clinically suspected aspiration . Small nodular opacity in left lower lung , for which standard PA and lateral CXR is recommended for further evaluation prior to discharge .