Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest were performed with the patient positioned upright . There is a mild pulmonary edema with stable cardiomegaly . Left basal opacity could reflect atelectasis , likely with small effusion . There is no pneumothorax . Mediastinal contour appears stable . The bony structures appear unchanged with a compression deformity at the thoracolumbar junction seen on lateral view , unchanged .
    OUTPUT:
    
Mild edema with left basal opacity , likely a combination of atelectasis and effusion . Mild edema unchanged .