Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable severe cardiomegaly with tortuous but normal caliber aorta . There is no pulmonary edema , pulmonary vascular congestion , or pleural effusion . The lungs are well expanded and clear . There is no pneumothorax .
    OUTPUT:
    
1 . No pneumonia . 2 . Severe cardiomegaly without signs of heart failure .