Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Mild cardiomegaly and mediastinal contours are stable . The pulmonary vasculature is engorged and there may be a trace of pulmonary edema . Small opacity in the left posterior costophrenic angle could represent a trace effusion . No pneumothorax or focal consolidation . No displaced rib fracture .
    OUTPUT:
    
No pneumothorax or displaced rib fracture . Acute on chronic borderline cardiac decompensation .