Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires intact and aligned . Surgical clips overlie the mediastinum . Prosthetic aortic and mitral valves intact . Moderate cardiomegaly with minimal pulmonary vascular congestion . Mild pleural thickening with rounded atelectasis at the left base . Normal hilar contours . No acute pneumonia .
    OUTPUT:
    
Minimal pulmonary vascular congestion .