0:01

And our next case is a 48-year-old woman with a

0:05

recent diagnosis of left breast cancer, and MRI

0:08

was performed to evaluate extent of disease.

0:12

We'll go to her MIP and just show you this.

0:15

So the patient has a large enhancing mass in the

0:19

left breast, and this was a known breast cancer.

0:23

And she also has some moderate

0:25

background parenchymal enhancement.

0:27

So we're going to take a look at some other

0:30

series and investigate this a little bit more.

0:35

So again, I'm pulling her

0:37

T1-weighted and first subtracted

0:41

series.

0:42

You can see that she has heterogeneous

0:45

fibroglandular tissue and

0:48

moderate background enhancement.

0:50

There's a lot of little,

0:52

little foci, little spots that enhance

0:56

and background enhancement.

0:59

As we go through the left breast,

1:00

you can see this irregular mass.

1:03

There is a susceptibility artifact from

1:05

a biopsy clip centrally, and that's the

1:09

area where her biopsy clip is located,

1:12

and that was her known breast cancer.

1:16

And as we scroll through, there's a lot of

1:18

background enhancement, but there's one area

1:21

that stood out as being a little bit different

1:26

to us, and it was right here, kind of in the

1:29

same plane or at the same level as her mass.

1:33

She had a little area of non-mass

1:35

enhancement, focal non-mass enhancement,

1:38

and we elected to biopsy this

1:44

after, you know, further evaluation.

1:46

But basically we looked at,

1:48

you know, all of her exam and

1:55

nothing else really stood out like this did.

1:58

So the biopsy was performed and that was

2:03

benign, benign breast tissue and something

2:07

called pseudoangiomatous stromal hyperplasia,

2:11

which is abbreviated as PASH, P A S H.

2:14

And that's actually a fairly common

2:16

result when we do MRI-guided biopsies

2:19

of areas of non-mass enhancement.

2:22

So that was our finding here.

2:26

So because this was benign, the patient

2:27

was able to go on to a lumpectomy,

2:31

just involving the known breast cancer.