Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The hilar and mediastinal contours are within normal limits . There is central pulmonary vascular congestion with mild interstitial edema , and a small left pleural effusion . There is no pneumothorax .
    OUTPUT:
    
Mild cardiomegaly , central pulmonary vascular congestion with mild interstitial edema , and a small left pleural effusion , may represent cardiac decompensation .