Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart appears mild to moderately enlarged . Diffuse opacification is mildly asymmetric , somewhat more prominent in the left mid lung than right , but most likely due overall to pulmonary edema . Opacity also obscures the posterior left hemidiaphragm , which shows upward tenting . This type of appearance could be seen with atelectasis , although infection is not entirely excluded by this examination . Fissures are thickened . There are no definite pleural effusions .
    OUTPUT:
    
Diffuse opacification and cardiomegaly suggesting pulmonary edema . Patchy focal left posterior lower lobe opacity , which can probably be explained by atelectasis , although pneumonia is not excluded . In addition to correlation with clinical presentation , short - term followup radiographs may be helpful to reassess .