Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is evident on this single view . Heart size is are within normal limits . Left mediastinal contour abnormality is due either to mediastinal fat or to a persistent left sided superior vena cava .
    OUTPUT:
    
No radiographic evidence for acute cardiopulmonary process .