Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single supine portable AP view of the chest was provided . The endotracheal tube is seen with its tip residing approximately 5 .2 cm above the carina . A left arm PICC line is seen with its tip in the mid SVC . NG tube courses inferiorly along the thoracic midline extending into the left upper quadrant . The heart appears mildly enlarged . Lower lobe opacities likely reflect atelectasis . The mid to upper lungs appear well aerated . The mediastinal contour is widened , though this is likely due to position . The bony structures are intact .
    OUTPUT:
    
Appropriately positioned lines and tubes . Bibasilar atelectasis and mild cardiomegaly .