Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided demonstrate an AICD projecting over the left chest wall with leads extending into the region of the right atrium , right ventricle , and coronary sinus . Cardiomegaly is moderate . The lungs are clear . No pleural effusion or pneumothorax . Atherosclerotic calcification at the aortic knob . Bony structures intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Moderate cardiomegaly with AICD in unchanged position . No evidence of congestive heart failure or pneumonia .