Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . Mild cardiomegaly , mediastinal and pulmonary vascular engorgement suggest volume overload and / or mild biventricular decompensation . Mild scarring or chronic atelectasis is still present at the left lung base . The lungs are otherwise clear . There is no focal consolidation , effusion , or pneumothorax . Mediastinal contours are normal .
    OUTPUT:
    
Mild biventricular decompensation . LLL scarring or atelectasis more likely than pneumonia .