Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP semi-erect chest film ___ at 04 :49 is submitted
    OUTPUT:
    
Endotracheal tube , nasogastric tube , and left subclavian central line are unchanged in position . Esophageal pH probe is in place . Overall cardiac and mediastinal contours are stable . Lungs appear relatively well inflated without evidence of focal airspace consolidation , pulmonary edema or pleural effusions . No pneumothorax .