Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient remains intubated . The balloon of the endotracheal tube seems somewhat overinflated . An orogastric tube courses into the stomach . A right internal jugular introducer catheter remains . Aortic valve prosthesis is also noted . Cardiac , mediastinal and hilar contours appear stable . Right upper lung opacity has continued to improve . Left perihilar opacification shows apparent increased , particularly compared to the right , where aeration has markedly improved . However , it is possible that apparent increase in left perihilar opacification may reflect differences in orientation to some degree . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Marked improvement in aeration in the right lung . Apparent increase in left perihilar opacification , although possibly due to differences in orientation . This appearance may be seen with improving pulmonary edema or persistent area of chemical aspiration pneumonitis . Developing new area of pneumonia is not excluded . Correlation regarding interval circumstances is suggested . Short - term follow - up radiographs may be appropriate . Possible overinflation of endotracheal tube cuff .