Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Right basilar consolidation may represent atelectasis . Left basilar atelectasis is presumed . Air-fluid levels in the left base are new . Right neck subcutaneous emphysema is slightly improved . Right chest tube remains in similar position .
    OUTPUT:
    
Left basilar air - fluid levels may represent hydropneumothorax , posterior loculated pleural air fluid collection , or diaphragmatic herniation . Conventional PA and lateral radiographs are recommended if possible .