Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP view of the chest provided . ET tube tip 7 .0 cm above the carina unchanged from the prior . An OG tube and a left central line are unchanged in position from the prior . There is no pneumothorax . A small left pleural effusion is unchanged . The hilar contours are normal . Moderate cardiomegaly is unchanged . Severe left basilar atelectasis is unchanged . The right lung is clear . Moderate cardiomegaly is improved over the last several days .
    OUTPUT:
    
1 . ET tube tip 7 .0 cm above the carina , but below the lower margins of the clavicles , is in acceptable position . 2 . An OG tube extending to at least the body of the stomach and a left central line ending in the left brachiocephalic vein are unchanged from the prior . 3 . Severe , left basilar atelectasis and a small left pleural effusion are unchanged from prior . 4 . Moderate cardiomegaly is improved over the last several days .