Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mild - to - moderately enlarged . The mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . There are persistent reticular opacities with hazy background opacity within in the mid - to - lower lungs or perhaps recurring opacity that is relatively confluent more in the right lower lobe than elsewhere . Much of this appearance is suggestive of vascular congestion including indistinct upper zone redistribution of pulmonary vascularity and thickening of fissures . A patchy focal right upper lobe opacity appears unchanged and is most suggestive of a form of prior scarring .
    OUTPUT:
    
Findings which are most suggestive of pulmonary edema , although more confluent in the right lower lobe than elsewhere . In the setting of high clinical suspicion for pneumonia , the possibility this represents a developing focal pneumonia as a second diagnosis could be considered in the appropriate setting .