Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Organized postoperative hematoma and mediastinal fat obscure left heart border . Lungs are otherwise clear , without consolidation , pleural effusion or pneumothorax . No pneumothorax . A prosthetic mitral valve is noted . The median sternotomy wires are intact . Moderately enlarged heart is slightly larger compared to the prior study . Calcification indicates prior pericarditis or hemopericardium .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Moderate cardiomegaly , increased .