0:01

In summary, keep in mind

0:02

that the airway is an important structure to pay attention

0:05

to on imaging When we're looking at a normal airway.

0:10

Remember, there are variations of normal,

0:11

particularly in young children,

0:13

to include expiratory buckling,

0:16

and we want to see the normal subglottic shouldering.

0:18

If we happen to be imaging the patient in expiration on a

0:21

frontal view of the congenital disorders,

0:26

think about a couple things.

0:28

Is the nasal passageway patent?

0:31

If not, then think about piriform aperture stenosis

0:34

or al atresia.

0:36

If you're thinking more about the trachea

0:39

or central bronchi

0:42

and you're not sure about patency,

0:44

consider a dynamic CT over time where you might be able

0:46

to evaluate the cross-sectional area between inspiration

0:50

and expiration of the infectious disorders.

0:54

Remember, do you see a steeple sign?

0:57

Think of croup if you do. Do you see pseudo membranes?

1:00

Think of bacterial tracheitis. Do you see a thumbprint?

1:04

Don't forget about epiglottitis.

1:07

And finally, when thinking about neoplastic disorders,

1:11

particularly think about whether you see unexpected

1:14

asymmetry of the airway.

1:16

And if you see some sort

1:17

of post obstructive atelectasis on a chest ct,

1:21

really scrutinized

1:22

to check if there's an endobronchial lesion obstructing

1:25

that airway to cause the atelectasis.