Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right IJ catheter has been removed . Lung volumes appear slightly lower compared to the prior study , which exaggerates bronchovascular markings . Increased perihilar opacity on the right may represent worsening vascular congestion exaggerated by a low lung volumes , although a superimposed pneumonia can not be excluded in the appropriate clinical setting . Dense left retrocardiac opacity has improved , likely reflecting resolving atelectasis . There is suggestion of a small layering pleural effusion on the left . No pneumothorax . Moderate cardiomegaly is stable . No acute osseous abnormalities . Right hemidiaphragm is newly elevated from ___ .
    OUTPUT:
    
1 . Asymmetrical right perihilar opacity , may represent worsening vascular congestion the setting of low lung volumes . However , superimposed pneumonia should be considered in the appropriate clinical setting . 2 . Small left pleural effusion . 3 . No pneumothorax . 4 . New right hemidiaphragm elevation .