Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD / pacemaker device is noted with leads terminating in the right atrium , right ventricle , and coronary sinus . Right internal jugular central venous catheter tip terminates in the low SVC , unchanged . Moderate to severe cardiomegaly is re - demonstrated . The aorta is tortuous and diffusely calcified . There is mild pulmonary edema , slightly worse in the interval . Streaky retrocardiac opacity could reflect atelectasis , but infection is not excluded . No pleural effusion or pneumothorax is clearly identified though assessment of both lung apices is slightly limited due to overlying soft tissues from the neck and chin obscuring these regions .
    OUTPUT:
    
Mild pulmonary edema , slightly worse in the interval with retrocardiac opacity , likely atelectasis but infection is not excluded .