Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A pacer / defibrillator unit projects over the left chest with leads in the right atrium and right ventricle . The heart size continues to be severely enlarged with a globular appearance compatible with patient 's known history of cardiomyopathy . The lungs show mildly engorged pulmonary vasculature and edema . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Stably dilated heart compatible with cardiomyopathy and mild edema .