Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Elevation of left hemidiaphragm is unchanged since ___ . Superimposed small bilateral pleural effusions have improved . There is no acute lung process . Cardiomegaly , which is severe , is unchanged . There is no pneumothorax .
    OUTPUT:
    
There are no acute cardiopulmonary findings . There is no evidence of edema .