Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP chest radiograph is not significantly changed from ___ . Mild enlargement of the heart and pulmonary vascularity is unchanged . Left retrocardiac opacity is not well seen due to projection . Probable small bilateral effusions are noted . There is no pneumothorax .
    OUTPUT:
    
Mild pulmonary edema , unchanged from ___ . However , PA and lateral radiographs are recommended to evaluate for possible retrocardiac opacity .