Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bibasilar opacities right greater than left concerning for pneumonia particularly in the right lower lung . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Irregularity in the left posterior eighth rib is noted without definite fracture line , correspond with clinical site of pain .
    OUTPUT:
    
Bibasilar opacities concerning for pneumonia , particularly at the right base . Irregularity of cortex of left eighth posterior rib is seen , unclear if definite fracture , correlate clinically .