Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Massive cardiomegaly is unchanged . Single pacemaker lead terminates in the right ventricle . The mediastinal and hilar contours are normal . The aortic arch is again calcified . Opacities at the lung base on the lateral radiograph have worsened . A small pleural effusion is seen in the posterior costophrenic sulcus , however the laterality is unclear .
    OUTPUT:
    
1 . Stable massive cardiomegaly . 2 . Worsening opacities at the lung base on the lateral radiograph may reflect pulmonary edema or pneumonia .