Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest ___ at 17 : 26 is submitted .
    OUTPUT:
    
Endotracheal tube has its tip approximately 3 .5 cm above the carina . Lungs appear relatively well inflated with no focal airspace consolidation to suggest pneumonia . No pulmonary edema or pneumothorax . Overall cardiac and mediastinal contours are unchanged . Possible tiny left effusion .