Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Marked interval improvement since ___ . Minimal residual pneumomediastinum . Otherwise , complete resolution of pneumoperitoneum and subcutaneous emphysema . The lungs are well - expanded and clear , without focal consolidation or pulmonary edema . No pneumothorax or pleural effusion . The heart size is normal . Mediastinal contours , hila , and pleura are unremarkable .
    OUTPUT:
    
Minimal residual pneumomediastinum ; otherwise complete resolution of pneumoperitoneum and subcutaneous emphysema since ___ .