Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is detected . There is mild flattening of the hemidiaphragms common which appears unchanged since at least ___ . Heart and mediastinal contours are stable ; slightly globular cardiac contour appears unchanged since at least ___ .
    OUTPUT:
    
No radiographic evidence for acute cardiopulmonary process .