Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable moderate enlargement of the cardiac silhouette either likely secondary to cardiomegaly or pericardial effusion , which is accompanied by pulmonary vascular congestion . There is overall stable bilateral moderate pulmonary edema . Pulmonary edema appears asymmetrical involving the right lung to a greater degree than left . There has been interval improvement in the left basilar atelectasis with a stable small left effusion . There may be a small right apical pneumothorax , however this is not well seen on this exam .
    OUTPUT:
    
Stable minimal , if any , right apical pneumothorax .