Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is marked increase in opacification of the right lower lobe with a component of volume loss . A less extensive opacity is also developing in the left retrocardiac area compared to the prior radiographs , although not necessarily changed from the more recent CT , to which it is difficult to compare precisely due to differences in technique . L1 and L3 compression deformities appear unchanged , although not well visualized . The bones appear demineralized .
    OUTPUT:
    
Opacities at both lung bases are worrisome for pneumonia ; aspiration could also be considered in the appropriate setting . No evidence for congestive heart failure .