Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly has been stable compared to exams dated back to ___ . There may be a small left pleural effusion . The leads appear to be in appropriate position . There is mild pulmonary vascular congestion . There is no evidence of a pneumothorax . Visualized osseous structures are unremarkable .
    OUTPUT:
    
No evidence of a pneumothorax . Persistent mild pulmonary vascular congestion . Mild pulmonary edema .