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Case: Recurrence Post-Prostatectomy

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So for our final case of this section,

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we're looking at a patient who has had a prostatectomy.

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And in our practice,

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unfortunately this patient didn't have an early dynamic,

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but often in our practice they will.

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Um, sometimes it's just a matter of timing on the day

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and just to kind of show,

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illustrate a bit of a practice point.

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So I'm gonna make it a little bit paler.

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So this is kind of, you know, reading on like, you know,

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zero to 10, zero to 15

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and rotating on that mib even though kind

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of we can see really well through the liver and spleen.

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We are not seeing the abnormality.

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So I'm going to put it back onto where I like to read it

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and this is why I like to read things a little bit more

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toasty, a little bit more noisy

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because if you look closely down at the bladder,

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there's something going on here.

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The patient has that kind of, you know,

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the bladder's kind of funneled down.

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The patient has had a prostatectomy

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so it's fallen into the prostatectomy bed,

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but there's something going on here.

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Not too much else as we might check out what that.is.

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But this patient only had a very small

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biochemical recurrence.

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The PSA would've been less than one, but it's just going up.

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There's something going on.

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So we're coming down, down, down, down, down.

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I scroll like we need to work out what this little.is.

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So there's our bladder coming down front all the way

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to the anastomosis

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and right at the anastomosis is that dot right there.

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So here we'll bring it side by side with our low dose ct

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and another great demonstration of how that radio urine

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tagging with the intravenous contrast is really useful.

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So I'm just gonna flatten that out a little bit

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so we can see inside the bladder.

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So you can even see the trabeculation is quite nice,

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but coming down we wanna confirm

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that there is no urine down here, just that white dot

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and all we can see here.

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So that's going to be the urine within that physiological,

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um, anastomosis and the upper urethra,

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but there is nothing there.

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So this spot is local recurrence, post prostatectomy.

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So there's that side of disease

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and we've able been able to find it so early

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and in a nodule that, you know,

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you probably would have a bit of trouble finding on ct.

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A few other things to note on this scan as well.

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You might say, oh Sally, that is this a presacral lymph

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node, but actually I think it's a ganglia.

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So we're here anterior to the sacral foramen.

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Um, there's one on the other side that has minimal uptake,

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so I'm gonna call that as a sacral ganglia.

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If I kind of scroll up

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and down on it, I might be able to follow it

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and it's symmetrical.

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And then coming up through the retroperitoneum,

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I would've checked my pelvis going up and down.

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There's another couple of ganglia right there.

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This patient's got quite a number of them,

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so coming up celiacs

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and then I'd be going really well through the entirety

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of the study, scrolling up

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and down, interrogating the lungs to make sure

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that there are no nodules looking

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through the bones on the gray scale imaging as well

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as the fused imaging and low

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Dose CT to really, um, look for sites of recurrence

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and turning down the liver and spleen to look through.

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Um, but in this case it was just a single site

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of recurrent disease at that post prostatectomy bed.

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And this really just does highlight the importance

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of accounting for your physiological uptake

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and then looking outside of it.

Report

Note

Faculty

Sally Ayesa, MD, MSc, MBBS, FRANZCR, FAANMS

Lecturer, Radiologist & Nuclear Medicine Specialist

University of Sydney & NSW Health

Tags

Prostate/seminal vesicles

PET/CT PSMA

Oncologic Imaging

Nuclear Medicine

Neoplastic

Genitourinary (GU)

Body