Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right chest cardiac device is an unchanged orientation , and associated leads demonstrate a stable configuration in comparison to prior radiograph from ___ . There is stable severe cardiomegaly . The mediastinal contours are unchanged . Lung volumes are low . There is pulmonary vascular congestion and likely moderate pulmonary edema . A retrocardiac opacity may represent atelectasis in the setting of low lung volumes , however infection can not be excluded by radiograph . There is probably a trace left pleural effusion . There is no prior right pleural effusion . There is no pneumothorax .
    OUTPUT:
    
1 . Stable severe cardiomegaly . Pulmonary vascular ingestion and likely moderate pulmonary edema . 2 . Likely small left pleural effusion . 3 . Low lung volumes . Retrocardiac opacity likely reflects atelectasis , however infection can not be excluded by radiograph in the appropriate clinical setting .