Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded . Mild pulmonary vascular congestion and bilateral increased interstitial markings are consistent with mild edema . The heart is mildly enlarged , more so from the prior exam . 2 lead cardiac pacer device is unchanged in position . The thoracic aorta is tortuous , unchanged . No pleural effusion , focal pneumonia , or pneumothorax . Diffuse degenerative changes of the spine are again visualized with flowing anterior osteophytes
    OUTPUT:
    
1 . No focal pneumonia . 2 . Mild cardiomegaly and edema .