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Breast MRI Case 5

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This is the baseline in this patient.

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This patient's history is...

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She is a 59-year-old

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who currently is eight years status post bilateral silicon implants.

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But at the time of this study,

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she was only a year or two into her implants.

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And at that time, she was having some symptoms and they were concerned, in both

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breasts, they were concerned about ruptures.

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I'm just going to show you this one as her baseline.

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We're not going to ask questions about

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this one, but just to give you something to look at and we'll come back to it.

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So, right one.

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And so, that's her...

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Yes, that's her right breast.

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And here is her left breast.

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These are both silicon bright sequences.

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They really give you all the information you need in this case.

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And now we're going to jump forward, seven years.

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And she is, again, having some symptoms.

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She feels that they've changed size and she's having some discomfort.

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So we've changed our protocol in the intervening seven years.

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Now, we're doing bilateral study and what I

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have on the left side here is the silicon bright axial sequence.

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And then I have the silicon dark sequence on the right side.

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And I'm just going to go through these and then we'll look at the sagittal images.

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I'm going to bring up the silicon bright, which I think are by far the most helpful.

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This is the right sided one.

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This is left sided one.

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So that's the left one,

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and the right one.

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Do you want to put that poll up, please?

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So this is for case 6.

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Alright.

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We look at that one.

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Good.

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So most of you got the correct answer here, which was intracapsular rupture.

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Then we'll talk about the differences

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between intra and extracapsular rupture in a minute.

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But let me just close that.

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I just want to go back to the first study, her baseline study, and just show you how.

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These are normal radial folds.

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You allowed some little...

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Let's show a better example of it.

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I think this one had...

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The right one had better...

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There we go.

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So this is a normal radial fold.

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It starts at the edge of the capsule

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and it stays and within the shell of the implant,

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and it's just a little fold, and it ends blindly.

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You know,

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it's just as you can imagine a fold is going to look, we do in his...

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On the left side,

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there are several of those.

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So that was normal and called negative correctly at the time.

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But now, we're seeing something rather different.

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So now, we can see this pretty well, just on the axial sequence.

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We are seeing something very different here.

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These folds look different.

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Let me zoom up on one of these to try and show it to you a bit better.

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I think this right breast pretty much shows it all.

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Although, they're both very similar.

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So what we're seeing here is what's called

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the keyhole sign, where we've got bright silicon inside

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the implant, but we've got bright silicon inside that fold, as well.

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You can see as we get further down

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in the implant,

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down here, we're now down more inferiorly.

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We're now seeing much more silicon outside of the capsule,

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outside of the capsule or shell,

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I'm sorry, the shell of the implant, but inside the capsule.

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This is the outer capsule,

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the fibrous capsule that the body forms around the implant.

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And at no point are we seeing anything bright outside of that.

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Now, it's always good to look at the dark silicon,

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and that was just confirmed on the sagittal slices.

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It's good to look at the dark silicon and link these together,

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because what you want to see,

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you just want to confirm that those areas which are bright

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on the bright silicon, do suppress and are dark on the dark silicon.

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We've not done a great job of suppression here.

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You can see that although they're supposed to be fat and silicon suppressed,

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but they've kind of messed up the fat suppression here.

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If that remain bright, then it would be likely fluid

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outside of the implant shell and under the capsule, not silicon.

Report

Faculty

Petra J Lewis, MBBS

Professor of Radiology and OBGYN

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

Tags

MRI

Implants

Breast

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