Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged including mild to moderate cardiomegaly . There has been mild improvement in aeration of the left lower lung although probably with a small persistent pleural effusion . On the right , several areas of dense opacification appear very similar in pattern , probably with a small pleural effusion . In addition , however , there is a more coarse appearance of interstitial change in the right mid to lower lung , as well as perhaps increased density associated with perihilar opacification .
    OUTPUT:
    
Increased coarse interstitial opacification of the right lung mid to lower lung , worrisome for lymphangitic carcinomatosis or lymphatic congestion , which could result from hilar obstruction . Increased right hilar opacification . Differential considerations also include superimposed infection . Otherwise the examination is very similar . Chest CT may be helpful to assess for change in more specific detail if clinically indicated .