Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest show interposition of air - filled hepatic flexure between the liver and the elevated right hemidiaphragm compared to a prior study from just six days ago . Associated subsegmental atelectasis limits visualization of known irregularity / consolidation that was seen on CT on the ___ , but a 6 mm nodular density is evident at the right lung base also be seen on CT . Attention to pulmonary vascularity shows this to be within normal limits and the lungs are free of edema or pleural fluid . The heart and mediastinal contours are unchanged and no new bony lesion is seen .
    OUTPUT:
    
Internal interposition of air-filled hepatic flexure between right hemidiaphragm ( which is elevated ) and liver . Further compressing parenchyma at the right base , possibly giving rise to the patient 's current symptoms .