Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette and hilar contours are stable . Persistent low lung volumes result in bronchovascular crowding and there is persistent indistinct appearance of pulmonary vasculature and perihilar fullness suggesting congestion . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Unchanged pulmonary vascular congestion without overt pulmonary edema .