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Wk 2, Case 2 - Review

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0:04

Now let's look at the post treatment, which is case,

0:08

the second case today.

0:11

And to look at the BA post treatment, you have

0:13

to look at them side by side.

0:15

You can't look at post-treatment alone.

0:16

You have to look at them in comparison.

0:20

And this is what we are doing now, see what I told you, the,

0:24

the baseline now is in the bottom

0:26

and that post-treatment treatment scan is in the top right.

0:30

And I think this was a mid,

0:32

this was even a mid treatment, not a post treatment.

0:36

One second, let me,

0:42

um, I think it was a mid treatment scan,

0:44

if I'm not mistaken.

0:47

I can, I can't tell you exactly what was it

0:51

after just two, two cycles of, uh, chemotherapy

0:55

and see how beautiful is that the treatment?

0:57

Let me go back up. You have to go up

0:59

and I will put it on bit only.

1:03

Of course, you look at the bit only image

1:06

and show you the

1:11

ano first, where we talk about

1:16

ve the five scale, VE or I call it Lugano just

1:19

because they met again in Logano

1:21

and they had a new, they had a new, um, release

1:24

of updating the, the staging and everything.

1:26

And they, it, they call it Luo

1:28

because it's, it's the updated version.

1:30

So you can call it VE or logano, whatever you call it.

1:32

It's the, it's the same scale.

1:34

So let me show you,

1:36

and again, it's in your syllabus, it's very easy.

1:40

Um, I will show you the scale

1:43

and I will show you, I'll tell you how simple it is

1:46

to remember it.

1:48

So see, this is it. So basically what are the reference?

1:51

This is important. The background.

1:52

The background is the background muscle, the background, um,

1:56

fat, the background, okay?

1:58

And then you have the medicinal plot.

2:01

Pool is the second, and then you have the liver.

2:06

Okay, so you compare the site

2:10

of disease to the, at the baseline,

2:14

to the post-treatment scan.

2:15

And then the hottest residual activity,

2:19

is it up to background?

2:21

If it's up to background, it went down to that.

2:25

It's just nothing up to background. So it's a one.

2:27

If it's up to the blood pool, it's two.

2:31

If it's up to the liver, it's a three, right? That's easy.

2:36

If it's above the liver, it's gonna be four or five. Okay?

2:41

What is, what decide four

2:42

or five, four is just mild to moderately above the liver.

2:46

Five is basically plaque intensely hot, right?

2:50

Then it,

2:51

it will be depending on are we mid treatment or end of treatment.

2:55

So 1, 2, 3 is considered complete metabolic response, right?

2:59

Four five are gonna be depending on are we met treatment

3:03

or end of treatment.

3:04

If we are met treatment

3:06

and there was significant decrease in f DG uptake,

3:09

but there's still residual disease that is hot, we know

3:12

that this is a chemosensitive, um, tumor lymphoma.

3:15

And by the end of treatment, hopefully it will be gone.

3:20

If we are at the end of treatment, it's not the case.

3:23

This means this is a refractory disease and,

3:25

and the patient will need to have another,

3:27

a second line treatment, right?

3:29

So it, the, the four five is usually depending on

3:31

where are we in the treatment.

3:33

Okay? So you guys, I wanted to show the slides,

3:37

which is this one here when I was talking, but, so,

3:42

but you have it in your, all this is in,

3:44

in your syllabus already.

3:45

Uh, these are sent to you.

3:47

So you have this, this is what I was talking about. Okay.

3:52

All right. Now let's go from top again.

3:54

So baseline is the bottom

3:56

and post-treatment scan is the top right.

3:59

And I'm going slowly

4:00

and I'm looking at the size of, um, disease in the prior

4:05

and looking in

4:07

the post-treatment.

4:11

And whenever I am not sure, I said, well,

4:14

you are seeing only one monitor,

4:16

but I have two monitors, right?

4:17

I have, so I can see the, when I see something here

4:20

and here, and I can see is this a lymph node

4:22

that would happen to the lymph node.

4:23

I can show you also what I can do is I can do this

4:27

and we can see what is the side of disease.

4:29

But to really judge, is it similar to Blackpool liver?

4:33

You have to look at the pit only.

4:35

You have to look at the pit only, right?

4:37

Um, and looking through the disease,

4:47

going slowly here.

4:52

See, how beautiful is that?

4:54

And I'll show the, the city and the fuse after,

4:56

after we go through the peton.

4:58

See, see how much disease was here?

4:59

And look here you have thesal blood pool

5:03

and look, nothing above them, just no blood pool.

5:06

And when you look on the bottom, these were sites

5:08

of disease, right?

5:10

By the way, some of this was thymus like this, this,

5:13

you see this smooth wing gly, this is the thymus.

5:17

So above these nitrogenous heart, this are,

5:21

this is disease, right?

5:24

But when I go down here, this is the ths.

5:27

But anyway, I didn't wanna confuse you

5:29

because it's too hard to see for you.

5:31

And it doesn't matter the baseline

5:33

because the baseline, there's, there was disease already, so

5:36

it didn't matter to anyone

5:37

that the ths was also a little bit hypermetabolic.

5:40

But see, all the disease compared the bottom, I'm going up

5:44

and down for you guys to see that all the disease,

5:47

the bottom is gone.

5:48

Now let show you.

5:57

Now look, look here for example, in the salary notes,

6:02

look here, some of them are totally gone, some

6:05

of them shrink and it's not activity.

6:11

Look at that. Look at the, so

6:14

how I de describe its complete metabolic resolution

6:17

with significant decrease in number and size, right?

6:20

So how we, how I

6:21

and all they care about in the lymphoma, um,

6:26

oncology people, the medical, the medical oncology people,

6:28

they care about the metabolic activity

6:29

because some of this disease, the in the city,

6:32

the the no are gonna stay there.

6:34

There you, there will be always disease to measure on city.

6:39

But the FDG pet

6:41

what will tell them whether this disease is gone

6:43

or not really, it's okay.

6:46

Um, so and then if I zoom in here,

6:49

and then the other thing that is important is,

6:51

is there any new sites

6:53

of metabolically active disease in this scan?

6:55

Because anytime there's a new site of metabolically disease

6:59

that you think it is lymphoma, this is a five.

7:01

It doesn't matter how hard it's as, as long as it's f dg,

7:05

avid side that is new in this scan

7:08

and you believe it is a lymphoma, this is a five, right?

7:11

If it's a new site, you don't know what it is.

7:14

You are not sure it's lymphoma

7:15

or not lymphoma, maybe infection,

7:16

maybe lymphoma, I don't know.

7:18

You give it an x, X means I don't know, right?

7:23

And you need to follow this up or you know, watch it

7:26

or something, right?

7:27

Because there's an X also in the,

7:29

in the dove slash ano, right?

7:32

So in this patient, there's nothing,

7:33

and you'll notice that this is also gone the physiologic

7:36

because it depends, this corpus tmm is, is,

7:39

is depends on the phase, which phase we were in the

7:42

menstrual cycle and even the endometrial activity

7:45

cooled down, right?

7:46

You see, because it depends on the phase.

7:49

Like this one was in um, November 11th.

7:53

This is, it depends on the face

7:55

of the, of her menstrual cycle.

7:57

The other thing is look how much hotter is the bone marrow?

8:02

Because this was a baseline prior to treatment.

8:05

Now she's on treatment and they are giving her

8:07

the colon stimulating factor.

8:08

So now the marrow is much more stimulated, right?

8:12

But still it is marrow activation,

8:15

it is not infiltration.

8:18

And this is of course, um, injection side activity.

8:22

All this, you have to know

8:24

that this is nothing to worry about.

8:27

And this is, um, complete me

8:29

of response case And the mid treatment

8:32

after two cycles by the fourth cycle patient was complet

8:35

public response.

Report

Please note: Items with dashed lines (--) are information withheld as it is not relevant for you to arrive at the correct findings and impression for the report and/or it was withheld for privacy information. The items were left in to show you the typical information documented in a PET report.

Patient History:
---year-old female with history nodular sclerosing Hodgkin lymphoma, status post 2 cycles of ABVD, presenting for mid-treatment response assessment.

Technique:
Preparation: Last oral intake (except water)-------.
Diabetic: --.
Blood glucose at time of FDG administration: --mg/dL.
Radiopharmaceutical: ---- mCi of F-18 FDG administered IV at --- at ---.
Incubation interval: -- minutes.
Oral contrast: ---.
Positioning: Arms down.
PET/CT scanner: --------.
PET/CT acquisition: Vertex-to-feet.
Standardized uptake value (SUV): Corrected for -----.
TOTAL DLP (Dose Length Product): ----- mGy.cm.

Comparison/Correlation:
--

Findings:
Technical quality: ----.
Measurements: Unless otherwise specified, all SUVs refer to maximum value in the target.
Mean SUV Aorta: ---, compared to ----.
Mean SUV liver: ---, compared to ----.

Head and Neck:
Complete metabolic resolution with interval decrease in size of previously seen left cervical adenopathy. Examples are:

12 x 5 mm left supraclavicular lymph node showing mild FDG uptake similar to blood pool level maximum SUV 1.5, compared to 14 x 13 mm maximum SUV 5.2 in prior scan.
22 x 11 mm left medial supraclavicular lymph node showing no FDG uptake above blood pool level, compared to 35 x 18 mm maximum SUV of 4.5 and prior scan.
Chest:
Complete metabolic resolution with interval significant decrease in number and size of previously seen hypermetabolic anterior mediastinal, left axillary, and bilateral subpectoral lymphadenopathy with little to no significant residual metabolic activity. Examples are:

1 cm left subpectoral lymph node which previously measured 1.5 cm
1 x 2 cm left supraclavicular conglomerate with maximum SUV 2.1, previously 1.5 x 2.3 cm with maximum SUV 5.2
No suspicious pulmonary nodules or masses.
No mediastinal, hilar, or axillary adenopathy.
Normal caliber of the thoracic aorta.


Abdomen and Pelvis:
No suspicious hypermetabolic lesions in the abdomen or pelvis.
Spleen is average in size showing diffuse FDG uptake similar to liver parenchymal level.
Solid Abdominal Organs:
No focal hypermetabolic activity in the liver significantly greater than the heterogeneous physiologic uptake. Unremarkable noncontrast appearance of the liver.
Normal gallbladder.
No hydronephrosis.
No suspicious adrenal masses.
No suspicious pancreatic findings.
GI Tract/Mesentery/Peritoneum: Physiologic bowel activity, without suspicious focal FDG uptake. The large and small bowel appear normal in caliber. No suspicious peritoneal/mesenteric findings.
Lymph Nodes: No pathologically enlarged or hypermetabolic lymph nodes in the abdomen or pelvis.
Pelvic Viscera: Unremarkable.
Vasculature: Normal caliber of the abdominal aorta.
Free Fluid: No ascites or drainable fluid collection.


Skeleton and Soft Tissues:
No suspicious hypermetabolic activity within the skeleton and soft tissues.
Diffusely increased hypermetabolic activity involving the axial skeleton and proximal appendicular skeleton compatible with bone marrow activation secondary to G-CSF therapy.
No aggressive osseous or suspicious soft tissue lesions.
Injection site activity.

Impression:
Overall findings suggest complete metabolic response,Deauville 2:

1. Complete metabolic resolution of previously seen metabolically active nodal disease above diaphragm with no significant residual metabolic activity.
2. No suspicious metabolically active nodal disease below the diaphragm.
3. No evidence of new metabolically active extra-nodal involvement.

Case Discussion

Faculty

Riham El Khouli, MD

Associate Professor of Radiology, Chief, Division of Nuclear Medicine/Molecular Imaging & Radiotheranostics

University of Kentucky

Michael F. Shriver, MD

Director of Nuclear Medicine

Proscan-NCH Imaging

Tags

PET/CT FDG

PET

Nuclear Medicine

Hematologic

CT