Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The ETT remains low but unchanged , 1 .5 cm above the carina with complete neck flexion . There is an NG tube coursing below the diaphragm , however the tip is not visualized on this image . The diffuse airspace opacity is unchanged on the left . There is increased airspace opacity at the right base . The right apical pleural effusion is unchanged . Heart size is stable . The mediastinal and hilar contours are stable . No pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . ET tube remains low with complete neck flexion . 2 . NG tube in appropriate position . 3 . Increasing airspace opacity at right base with unchanged airspace opacities diffusely throughout left lung , likely alveolar pulmonary edema . 4 . Unchanged right apical pleural effusion .