0:01

So when you have a case of pulmonary fibrosis, here's the

0:04

official diagnostic schema that we are supposed to use.

0:08

And so this mirrors what I was telling you in terms

0:11

of practical approach, but I think

0:14

that this can be a little bit too complex.

0:17

So I, again, I encourage you to use my practical approach

0:20

and going right to this,

0:21

but what we align on here is our use of the UIP pattern

0:26

and the problem UIP pattern.

0:27

These are gonna be the most common patterns

0:29

and most important patterns that we see on HRCT.

0:33

And so we'll talk about it in just a bit.

0:35

Remember I mentioned the indeterminate

0:37

for UIP pattern for you.

0:38

Again, these are cases where you kind

0:40

of just don't know what's going on.

0:41

You're kind of punting. And these are a list of findings

0:45

or distributions in which you actually think

0:47

that the HRCT is telling you.

0:49

This is not UIP, this is something else,

0:52

whether it's gonna be NSIP, whether HP or connected disease

0:56

or sarcoidosis.

0:58

So in every other disease category, what we're using

1:02

to define that category are lung findings.

1:05

Only in the alternative diagnostic category do we

1:07

have these other findings.

1:08

So if you see a lot of pleural plaques

1:11

with pulmonary fibrosis,

1:12

we're gonna be strongly considering asbestosis.

1:15

If we see a very dilated esophagus

1:16

and associated with pulmonary fibrosis,

1:18

especially if it's an NSI key pattern,

1:20

we're gonna be thinking about connective tissue disease

1:22

and I just wanted to call that out.

1:24

I.