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27 year old with numbness, tingling, swelling, and weakness in fingers

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This is a 27 year old woman and she had numbness and tingling in the

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second and third digits. She'd had it for a couple of years,

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some associated swelling. She had some grip strength, weakness, so apologies.

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These are not normally aligned.

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I think that she moved in between portions of acquiring these sequences.

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So just going from distal in the hand there,

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moving a little bit more proximal on our T1 and our PD fat set

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sequences.

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And this may be one of those t many cases you've seen it before or you haven't.

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So our last multiple choice question here,

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lipo fibromatosis. Hamartoma, it's a mouthful.

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It most frequently affects which nerve.

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All right. And the correct answer is, of course, the median nerve. Very good.

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So just like our case presentation, um,

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the median nerve lipo fibromatosis, hamartoma.

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So this comes by many names. There's some combination of fibroblasts and,

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um, and adipose tissue proliferation. We thought it's,

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it's really the hypertrophy of the epineurium and it can involve other nerves.

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But by and far, most commonly seen in the median nerve, um,

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patients can also have macole of the digits or of the hand itself.

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So let's go back to our, um, imaging findings here. This is a pretty, um,

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profound example. I think you can really appreciate, uh,

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the fatty hypertrophy of the epineurium.

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Once you get into the kind of distal carpal tunnel. In this case,

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you can see the, the more central nerve elements, um, uh,

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kind of more centrally located within this really fatty hypertrophy. Um,

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and you can see the increased signal and really that fas particular appearance

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of all of those nerve fascicle has, of course, through the median tunnel, uh,

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sorry, through the carpal tunnel involving that median nerve.

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Sometimes this is called the strands of spaghetti appearance. Uh,

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and you can appreciate why.

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You can see how these really look like they're just parallel. Uh,

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you get lots of redundancy or kind of granulation of those,

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of those nerve fibers there as well. So, all right,

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I'll switch back to our presentation here. I think that is it for me.

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I'm more than happy to answer questions if you have any. Um,

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thank you all for participating. Uh,

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I get excited about nerve imaging and happy to share some cases with you guys.

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So thank you. Feel free to email me if anything comes up.

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Faculty

Megan K Mills, MD

Assistant Professor of Musculoskeletal Radiology

University of Utah

Tags

Thumb & Finger

Musculoskeletal (MSK)

MSK

MRI