Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right lower lobe mass has been more fully characterized by a recent CT . Persistent right lower lobe volume loss , right pleural effusion and pleural thickening , similar to frontal scout image of recent CT . However , when today 's lateral radiograph is compared to the lateral scout image from the CT scan , a subtle area of increased opacity has developed in the right lower lobe posteriorly , partially obscuring the right hemidiaphragm . The left lung is clear except for a focal area of linear atelectasis of the left lung base . Cardiomediastinal contours are stable in appearance . No acute skeletal findings .
    OUTPUT:
    
Possible right lower lobe pneumonia , best visualized on the lateral radiograph . Right lower lobe mass and pleural disease are grossly unchanged from CT of ___ .