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Sacculation

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All right, so for this case, what we can see is an

0:04

area of dilated bowel on the True FISP, and you can

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see that it may be questionably narrowed on both sides

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of that, but this little area looks dilated, so it

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looks like there's a sacculation and some narrowing.

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And what we're going to try to do is decide, is this an

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acute process or a chronic process that's causing this?

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When we look at our cine images, you can see

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the same thing, which is this doesn't move here.

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There's a stricture of some sort, and there's a

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sacculation and dilated bowel near that stricture.

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So it's a nice use of the cine to really

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confirm that that is a true stricture.

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Next, we want to classify this though.

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Is this an acute process or chronic process?

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So there are two other key

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sequences we're going to look at.

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One is the enhancement pattern.

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So what is this doing on the 25

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second and the seven-minute images?

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So here's our early phase and we can

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see it is enhancing a bit.

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In the early phase, there's some enhancement

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here that's probably a little bit more than other

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bowel, but it's not a markedly enhancing process.

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We also don't see enhancement extending

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beyond the wall of the bowel, which is

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something that we see with acute inflammation.

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And we don't see breaks in the mucosa that we

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would see that would say that it's ulcerated, which is

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an important marker of an acute inflammatory process.

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On the seven-minute images, you can see

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that if anything, it's more pronounced.

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You see probably more enhancement

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involving a larger portion of the wall.

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And so that indicates that there's a fibrotic

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process going on, which makes sense because

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it doesn't seem like a large acute process.

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So it looks like a fibrotic process

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predominantly on the seven-minute images.

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We also need to look at this

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with an eye to the T2 appearance, however.

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44 00:01:51,595 --> 00:01:53,755 And so, when we look at our T2 series,

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we want to try to use the one with the fat

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saturation and look at this segment of bowel.

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And this is that same area, and you're going

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to have a hard time even seeing it, and that's

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because it's really quite dark on the sequence.

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And so there is not a lot of

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active acute inflammation going on.

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On this one, there's probably just

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a little bit of increased signal.

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So this, there is a little bit of

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acute inflammation going on here.

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And so largely, this appears to be a fibrotic process.

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You know, you have increased signal on the

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seven-minute images, which indicates fibrosis.

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You don't have ulceration.

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You don't have enhancement beyond the wall.

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And on the edema appearance,

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you have a little bit of edema.

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So there's clearly a fibrotic process, as we

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saw with the seven-minute images, and there's

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a small amount of acute process probably on

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one of these strictures, while the other one

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looks like it doesn't have much acute process.

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So because this is a predominantly fibrotic process,

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if this patient is symptomatic because of these strictures

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and they're having bowel obstructions or other

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problems, this will end up being a surgical case.

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They need to be treated in conjunction with the

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not just the gastroenterologist, but a bowel surgeon

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is going to want to get involved because that's

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going to be the only way to cure this process if the

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patient is symptomatic from these findings.

Report

Faculty

Benjamin Spilseth, MD, MBA, FSAR

Associate Professor of Radiology, Division Director of Abdominal Radiology

University of Minnesota

Tags

Small Bowel

Non-infectious Inflammatory

MRI

Large Bowel-Colon

Idiopathic

Gastrointestinal (GI)

Crohn’s Disease

Body

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