Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine portable view of the chest demonstrate low lung volumes . The left lung base consolidation , may represent atelectasis . No pleural effusion or pneumothorax . Pneumomediastinum and subcutaneous gas in the supraclavicular areas bilaterally extend to superiorly neck . No focal consolidation . No intraperitoneal free air .
    OUTPUT:
    
Pneumomediastinum and subcutaneous gas in the neck is most likely post-surgical . No evidence of pneumothorax or subdiaphragmatic free air .