Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased density at the right base has progressed compared to the prior study of ___ , and is compatible right middle lobe pneumonia . There is stable severe cardiomegaly . There is no pleural effusion , pneumothorax , or pulmonary edema .
    OUTPUT:
    
1 . Right middle lobe pneumonia . 2 . Stable severe cardiomegaly .