Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains moderately enlarged . Aortic knob is calcified . Mild pulmonary edema persists . Retrocardiac patchy opacity likely reflects atelectasis . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities . Small amount of fluid is seen along the right major fissure .
    OUTPUT:
    
Mild pulmonary edema and retrocardiac atelectasis .