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Cardiac Findings on Non-Gated Thoracic CT Case 4

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For moving right along here.

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And we'll go from easier cases to harder cases. So here's a

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sort of Mystery Case for you. Let me

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start at the top and I'll scroll through this case.

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And I'll open the poll questions now. So

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what do you think the most significant abnormality

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is here almost to the side and I'll keep scrolling.

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If you just a few more seconds just finish answering.

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All right, let's close the poll and see what people thought.

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All right, and I'm curious. So some people

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said the septum and other people

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said The myocardium, so let's take a look and see I am

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try to guess what people are going to say on

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these cases so I can understand people said septum

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because I I believe that they perceive that the septum here

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is is thin or perhaps you can't see a septum

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but I can tell you if this were a

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big ASD one thing that usually see with that big of

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an AST is Right hard and enlargement which we don't see right there.

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So the symptom is really there. There's no ASD the persons

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who said Mike hurting them are correct. So, let's see

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what the findings. Are. You see low attenuation Foci

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in The myocardium of the left ventricle,

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especially at the left ventricular Apex.

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And you can see that this is so low attenuation. It looks a

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lot like fat. In fact, it is fat.

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However, the mycardium is not really very

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thin. It's sort of normal thickness my cardium.

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I can show you that here. So the question is are these

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old infirks like we see almost every

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day where we see fat fatty metaplasia

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of the left ventricle from inferks. Well, no,

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these are multiple territories. It

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doesn't really confine itself too. I've asked

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for territory also, it's very globular. So

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when is the last time you've seen an inference look like that look like

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a blob of fat and furthermore,

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although some of these areas are some endocardial

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which in Forks old and

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forks. Love to give you others are actually some epicardial

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and midwal like this.

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So that's not typical for old inference.

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Now, what could this be? This could

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be a couple different things if I told you this patient had tubers for

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Roses. Well two sclerosis is famous

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for producing the so-called inter.

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Cardial fatty Foci, which can look

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like this you can just get fatty deposition within the

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heart also, you can get fatty deposition within

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the heart with just aging but that tends to

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involve the heart diffusely. It tends to be patchy tends to

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involve the right ventricle a lot as well as the left ventricle intense not

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to be as focal as this

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So let me show you and Mr. Of this patient

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and let's go to the next series here. So the

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Mr. Here if you're not a cardiac imager, you're

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not you may not be used to looking at this but this is a

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short axis view. We're looking at a slice right through the

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heart here and you can see that the

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normal myocardium is going to be dark and

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this is so called an old myocardium and the the

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hyperintense area here. This is

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after we've injected Galilean and waited about

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10 minutes. So this is late abnormal Catalina

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in enhancement. You can see that their focal globular areas

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of enhancement here in the left ventricle and

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scanning on down you see it particularly at the Apex a lot

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of enhancement of the left ventricle. I can

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go to the next series here and show you even more of

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this enhancement. So you can see now we're

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looking at the left ventricle along the long

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access here. You can see a lot of enhancement globular enhancement

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and this is not a Vas.

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Territory, this is actually patient with myocarditis and myocarditis.

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Although we don't see it every day on

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non-gated CT do this. It's one

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of the things that when it is is burned

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out so to speak it can leave areas of

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fatty amount of plasia within the heart within

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especially the left ventricle. So when you

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see nonvascular territory fat like this one of the

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things that you may want to think about is another insult

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that the patient may have had like a myocarditis or

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even a burnout sarcoidosis could also

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have this appearance. Although have to say I've never seen a sarcoidosis

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do this. I have seen my cardio. Myocarditis do

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this several times. So so a nice case of

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fatty replacement of areas of the left ventricle due

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to a prior my carditis.

Report

Faculty

Brent P Little, MD

Thoracic Radiologist & Assistant Program Director for the Radiology Residency

Massachusetts General Hospital, Harvard Medical School

Tags

Non-infectious Inflammatory

Myocardium

MRI

Infectious

Chest CT

Chest

Cardiac CT (SCCT Cat B1 Video Case)

Cardiac

CTA

CT