Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right lung volume is low compared to the left side . There are new and linear opacities in the right lower lobe , likely atelectasis versus consolidation . Aspiration pneumonitis is also a consideration . There is diffuse prominence of interstitial markings as well as vascular prominence . The right main bronchus is not clearly visualized and there is deviation of the distal trachea to the left side . This may reflect presence of a hematoma in this region related to the recent surgery . There is mild cardiomegaly and widening of the superior mediastinum . Epidural catheter is seen in place . Metallic hardware projects over the lower cervical spine .
    OUTPUT:
    
New right lower lobe atelectasis versus aspiration pneumonitis . Diffuse vascular prominence , increase in interstitial markings and cardiomegaly likely reflects presence of associated pulmonary edema . Widening of superior mediastinum with extrinsic compression over the distal trachea which is deviated to the left - side and nonvisualization of the right main bronchus , likely secondary to postsurgical edema .