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Clip Migration

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Challenge number 12.

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Okay, so this is the lesion in this patient

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before on the diagnostic study.

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This is the right CC mammogram after the biopsy.

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And you can see the clip is way out medial here,

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let me just turn this thing so you can see, you know,

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here's our biopsy site.

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We came from a lateral approach as you,

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you know, it's right in the middle.

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So lateral's still gonna be easier

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and yet our clip ends up miles away medially.

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And funny enough, when these clips migrate as such,

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I mean they don't actually get up legs and walk.

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Um, it's usually

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that they end up being too deep in the breast.

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Sometimes they pull out with the biopsy device

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and the cannula, but most times

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they actually end up too deep.

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And it's probably

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because, um, this is a fairly fatty breast, um,

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it probably compressed quite a lot.

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You ended up with a fairly big cavity

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and that that clips stuck

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to the posterior aspect of the cavity.

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But this is obviously a significant problem.

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If this was a malignant lesion, it turned out not to be

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and it need to be removed

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because you have nothing much else

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to be able to target from.

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So what can we do in this case?

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And again, it's probably partially because of hematomas

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and larger cavity sizes.

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Definitely see it more in fatty breast.

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Well, one challenge is that we actually don't usually image

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after placing the clip

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because we found there's so much air, um, biomark, um,

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because there's so much air and blood there.

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You can try imaging after the clip, uh, placement,

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but we usually find it's not particularly helpful at all.

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We do take them to have a mammogram afterwards.

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I have reduced the instance of this

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by pulling my introducer back five millimeters

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before I deploy the clip.

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And as worth drying, if you're finding you're having a lot

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of issues with deep deployment

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and if you find on the post, um, biopsy mammogram that

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that clip has indeed, um, shot miles away, then

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consider trying to replace it blindly.

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So you take the patient into ultrasound, you can look

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and see if you see the cavity

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and just use one of the ultrasound, um, clips

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to place it through the biopsy tracks just straight in.

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Usually everything's a ized up already.

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You just need to clean the breast up a bit into

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that biopsy cavity.

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Or sometimes I've even sort of just tried to calculate out

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where I knew it was from the diagnostic study.

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So I know it's five centimeters under the skin, for example,

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and just put it in free hand on the ultrasound table.

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And, um, surprisingly enough that works most times.

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Faculty

Petra J Lewis, MBBS

Professor of Radiology and OBGYN

Dartmouth-Hitchcock Medical Center & Geisel School of Medicine at Dartmouth

Tags

Women's Health

Non-infectious Inflammatory

Neoplastic

MRI

Idiopathic

Diagnosis & Staging

Breast