Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The RIJ tip is positioned at the right atrium , unchanged . Sternotomy wires are intact and appropriately aligned . The lungs are clear . There is no pneumothorax , pulmonary edema , or pleural effusion . Normal postoperative appearance of the cardiopulmonary silhouette . There is a left minor fissure .
    OUTPUT:
    
Normal post-operative cardiopulmonary appearance . No pleural effusion .