Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Compared to the prior radiograph of ___ , the lung volumes have improved and the interstitial edema has improved ; however , there is more vascular than there was on ___ . No focal opacity suggestive of pneumonia is seen . No pleural effusion or pneumothorax . Sternal wires are intact . Widening of the mediastinal contours and cardiomegaly is unchanged .
    OUTPUT:
    
Marked improvement in the pulmonary edema since ___ , however , there is more vascular congestion compared to the ___ radiograph , indicating impending pulmonary edema . No acute intrathoracic process .