Watch “PSMA After Recurrence, and PSMA Specificity | Answering YouTube Comments With Mark Scholz, MD | PCRI” on YouTube

This video was released today, and the timing could not have been more perfect. Dr. Scholz does make the distinction between the Axumin and PSMA PET scans, confirming that the PSMA PET is more likely to pick up my cancer’s location at my PSA level.

Day 3,910 – Bone Scan Results

As a baby boomer, I grew up with Spock. Both of them.

First, there was Dr. Benjamin Spock, the noted pediatrician who told my parents—and millions of other parents—how to raise and care for their kids. Then, of course, there was the Star Trek Spock, whose existence was rooted in Vulcan logic.

Now I’m not a Trekkie, but if you’ve read any part of this blog, you do know that facts, figures, and logic are high on my priority list, too. I thought, “What better way is there to outline the possible scenarios and decisions that are ahead of me than to put them all in a flow chart.” So here goes:

So let’s step through this.

We start with the CT and Bone scans that happened over the last two weeks. The first question is, “Did those scans determine the location of the prostate cancer (PCa)?”

If the answer is yes, then the next question is, “Was the prostate cancer in the prostate bed and/or pelvis?”

PCa in Prostate Bed/Pelvis

If the answer is yes, the PCa is in the prostate bed and/or pelvis, then Salvage Radiation Therapy (SRT) with or without Androgen Deprivation Therapy (ADT) (Hormone therapy) offers the last possible chance of a true cure. Of course, there are risks associated with SRT that would impact your daily quality of life: bowel control, bladder control, and lack of sexual function. Additionally, depending on which study you look at, SRT may be successful only 30% to 70% of the time. (Green bubble above.)

PCa is Not in Prostate Bed/Pelvis

But if the answer is no, the PCa is outside of the prostate bed and pelvis, that means the PCa is now distant and likely metastasized. If that’s the case, there is no cure and the PCa can only be managed with hormone therapy and perhaps chemotherapy. (Orange bubble above.)

CT and Bone Scans do not Locate the Prostate Cancer

We’ve talked at some length that neither the CT scan nor the bone scan have the sensitivity to pick up the cancer’s location based on my PSA level of 0.21 ng/mL. It was very likely that neither would pick up the cancer at that first decision point on the flow chart, so further investigation is required by using the Axumin or PSMA PET scan.

CT and Bone Scan Results

In fact, neither the CT nor the bone scan picked up the location of the cancer:

No definite scintigraphic evidence of metastatic bone disease and no evidence of a widespread osseous process

So that’s actually good news with the bone scan. It shows that it has not metastasized to the bones, which is definitely a good thing. (Or, at least if there is metastasis to the bones, it’s at a level that’s unable to be picked up by the sensitivity of the scan.)

Next Steps

We follow my red arrows above and run the Axumin or PSMA PET scans (or both) to see if either of those can pick up the location of the cancer. I’ll have that discussion with the urologist on 3 August 2021, and we’ll see when we can get them on the calendar.

If the Axumin and/or PSMA find the cancer in the prostate bed/pelvis, then we go back to the section above and land on SRT as the option. But if it’s found outside the prostate bed/pelvis, then we go back to the other section where we just manage with ADT. (If the lesion outside the pelvis is well-defined, it may be something that could be zapped in its location. Something to explore.)

If the Axumin or PSMA PET scan cannot locate the PCa, then things get fuzzy fast.

Sure, we could go ahead and blindly complete the salvage radiation therapy, hoping that we’re zapping in the correct place. Or, we could continue to monitor for a while longer and then retest to see if the cancer can be pinpointed.

This may have been a bit of an oversimplification of what’s ahead for me, but I’m hoping that it makes sense to you.

Be well!

Day 3,901 – CT Scan Results

Let’s start with the BLUF:

No definite evidence of locally recurrent or metastatic disease within the abdomen or pelvis.

(If you don’t know, BLUF = Bottom Line Up Front).

There was one 9 mm kidney-shaped lymph node that caught their attention, but didn’t think it to be remarkable.

They also commented on a bunch of my other organs and bits and pieces, but nothing seemed too out of the ordinary for any of them aside from a few dents and scratches from 63+ years of normal wear-and-tear and countless miles/kilometers.

The fact that the CT scan didn’t pick anything of substance up is a good thing and a bad thing. Good because it didn’t see anything; bad because it didn’t see anything. The likelihood of it detecting the lesions at my PSA level were small, and we knew that going into this. So even though we didn’t see anything, that doesn’t necessarily mean that it’s not there.

I did get a chuckle out of one line in the report:

Multidetector CT abdomen/pelvis was obtained after the uneventful administration of intravenous contrast.

Uneventful for who??? The radiologist? Sure. I did everything in my power to not puke all over their $300,000 scanner. 😲


I expect we’ll have the same result with bone scan next week, but time will tell.

That’s all for now.

Be well!

Day 3,892 – Scan-a-Palooza

Let the radioactive fun begin!

I was able to schedule my bone and CT scans this morning with considerable ease. In fact, things will happen much sooner than I thought they might. My CT scan is scheduled next Wednesday, 14 July, and my bone scan is scheduled Friday, 23 July.

I have to go for some pre-scan lab work tomorrow afternoon to ensure that my kidneys are working fine and won’t be damaged by one of the contrasts.

I haven’t given up on the Ga-68 PSMA PET scan. In fact, I wrote my health insurance company an email about 4:30 a.m. as I tossed and turned. (Last night was hell. If I slept more than 2 hours—non-consecutively—that was about it.) They tout having a response within 2 business days, so we’ll see if they come through with that.

UCLA is out of network for my insurance company, so I’d have to cough up 40% of the cost if they’re going to cover it at all. I’m okay with that. (For my overseas readers, welcome to U.S. health care systems!)

So that’s the latest and greatest. More to come, I’m sure.

Be well!

Day 3,891 – Doctor Appointment & New PSA Results

Anticipation for this appointment really did a number on me for some reason. I was nervous to the point of feeling queasy as I was driving to the San Diego VA Medical Center, which is quite unusual given how many times I’ve done this. I guess that this was different because my PSA had broached that dreaded 0.2 ng/mL mark.


Okay. I started this post (above) while sitting in the waiting area waiting for my appointment, and afterwards, my plan was to sit down at home this evening and summarize what we discussed. But the doctor just called a few minutes ago with some information that completely changes how I’m going to approach this post.

PSA Results

In a nutshell, one of the things we discussed was re-running the PSA test to see if last month’s 0.21 ng/mL was a real reading, or if it was an anomaly like the February 2020 drop from 0.16 ng/mL to 0.08 ng/mL. She even asked me if I had had an orgasm or rode a bicycle or did other similar activities before the June test. I had done none of those.

I asked to have the test re-run for peace of mind and she put the order in the system. She said that she should be able to see the results later this afternoon before they’re posted online, and instructed me to call her later in the day. She just returned my call with the results: my PSA came in at 0.21 again, confirming the June result. (You can also see that my PSA doubling time dropped to 48.1 months from 52.8 months in June.)

Note the addition of PSA doubling time to the chart in red, showing the PSA doubling time in months (right axis). [Click chart to enlarge.]

I’m not pleased that I’m hanging out in the 0.21 range, but I am pleased to have the confirmation. Now we know what we’re dealing with.

Plan A

During the consultation, we talked about possible courses of action. The first was to get the results and, if they were still hanging in the 0.16-0.18 range, we’d continue to monitor, perhaps bumping the frequency of PSA tests to three or four months instead. Obviously, that plan got tossed out the window.

Plan B

If the PSA came back with a confirmatory value, we agreed that scans to try to locate the cancer would be an appropriate next step. That was a great opening for me to talk about the Ga-68 PSMA PET scans at UCLA, but more on that later.

One thing that I’ve noticed in my years of being cared for at the VA Medical Center is that they do seem to be a tad slower to embrace some of the new technologies, definitions, and treatment options that are out there. Their protocol for someone in my situation is a bone scan in combination with a CT scan, so that’s what I’ll be calling to arrange tomorrow.

I argued that it’s very unlikely that the bone scan will pick up anything at my PSA level, and my doctor’s response was that we might be surprised. Ditto for the CT scan. If both scans are negative, the protocols would allow us to proceed to an Axumin PET scan done at the VA Medical Center. If the Axumin PET scan came back negative, then we may be able to figure out a way to get the PSMA PET scan at UCLA.

Of course, my preference would be to go straight to UCLA and skip the bone, CT, and Axumin scans altogether, but if those are the protocols that may get me answers I’m seeking, then I guess I need to follow them. Even so, I may try to push for the PSMA PET in place of the Axumin (I even mentioned to her that I may be willing to pay for it myself if the VA and my own insurance didn’t cover it).

General Conversation

One of the questions that I asked was about when the actual PSA value trumps the PSA doubling time when it comes to deciding to take action. Clearly, each case is unique and there is no definitive answer, but my doctor’s take on it was that she wouldn’t let a PSA go above 1.0 ng/mL without taking some action.

She did, however, bring up the fact that it’s becoming more widely accepted to do exactly what I’ve been doing—continuous monitoring. Too many patients are being overtreated with salvage radiation therapy with no guarantee of it being curative. She referenced how the American Urological Association (AUA) and National Comprehensive Cancer Network (NCCN) guidelines have been evolving over the years in a way that supports monitoring over action in some cases.

When I brought up the Ga-68 PSMA PET scan, it seemed that I may have been a little more up to speed on the topic than she was. We talked about it being FDA approved at UCLA and she reminded me that, just because it’s approved doesn’t mean it’s covered under the VA or private insurance yet. I agreed, and that’s when I mentioned I may be willing to pay for it myself.

I brought a hard-copy of this paper on the Ga-68 PSMA PET scan and left it with her for her review. We also reviewed the chart showing what the scan was picking up at various PSA levels, and where it was picking it up.

I found it interesting that one of the first things she looked at with the paper was who the authors were. I guess quacks write papers, too.

Final Thoughts

It’s been one helluva weird day, that’s for certain. It started with me feeling uncertain and queasy and, in a bizarre twist, I feel as though I’m ending it on a high note.

Sure. No one wants to have recurrent cancer. It sucks. But now I feel the uncertainty brought on by PSA results bouncing around for the last six years is finally coming to a close, and I can really begin to focus on what happens next. There’s a sense of direction, albeit down a path none of us would like to go down. (Yes, there’s lots more uncertainty ahead, I’m sure, but I’ll cross that bridge when I get to it.)

Tomorrow I’ll call to get the bone and CT scans set up and, once we know the dates, I can arrange a follow-up appointment to review the results.

If they come back negative, then we try the Axumin or PSMA PET scan if possible. Of course, I’ll be doing some reading on Axumin scans in the interim (I really haven’t focused that much on them as an option, so I need to learn more about them).

Having cancer sucks. Having more definitive information doesn’t.

Stay well, everyone!

Watch “Biochemical Recurrence After Local Therapy: Assessment and Management” on YouTube

This is a really interesting (at least to me) video out of the University of California San Francisco (UCSF). Remember that UCSF and UCLA were the two institutions that did considerable work to get the Ga-68 PSMA PET scan approved by the Food and Drug Administration in December 2020.

First, at the 3:04 minute mark in the video, he presents the number of positive scans by PSA level. Interestingly, he references the same study I posted earlier. What differs in this presentation from the other one I posted is that this looks at PSA values <0.2 and from 0.2-0.49, whereas the other study just looked at positive scans for PSA values <0.5. However, something seems off between the two.

In the original study, it showed a positive detection rate of about 38% for PSA values <0.5. In this video, however, the chart appears to show a positive detection rate at the <0.2 PSA level somewhere north of 40%, and a positive detection rate at the 0.2-0.49 PSA level somewhere north of 50%. Perhaps he wasn’t all that skilled at making bar charts in PowerPoint, but something is amiss.

Where I’m encouraged is that it appears that they are, in fact, able to detect cancer at my PSA level or even lower. The only question is, at what rate? I’ll stick with the one in three value for now, which is still better than zero.

I did email one of the doctors on the team at UCSF, and his response was:

There are no guarantees, but there is a chance that a PSMA PET could detect a site of recurrence with a PSA of greater than 0.2. The chance of detection usually increases as the PSA goes up.

Not exactly a ringing endorsement of his own product, but I think that’s more to couch expectations because this is so new and even he is still trying to figure it out. (I admit, I was surprised that he even responded, so I’m thankful for that.)

I’ve got a good list of questions ready for my appointment on Tuesday, and I’m sure I’ll spend some of this holiday weekend adding to it and refining it.

Stay tuned for more.

Watch “Rising PSA: How Soon Should You Get a Scan? | Thomas Hope, MD & Mark Moyad, MD | 2021 PCRI” on YouTube

Wow. This could not be more applicable to my current circumstances and certainly gives me food for thought.

Watch “2021: PSMA and Prostate Imaging | Dr. Thomas Hope | 2021 Moyad + Scholz Mid-Year Update | PCRI” on YouTube

I came across this video highlighting Ga68 PSMA PET imaging from the doctor at the University of California San Francisco who helped with developing this imaging technique. It’s a bit long and a bit technical in some places, but gives a good overview.

Day 3,869 – PSA, Imaging, and Salvage Radiation

Today was a tough day. The news of my PSA increasing to 0.21 ng/ml weighed heavily on me throughout the day. It even made me a little snippy in a meeting this morning, as my tolerance for trivial bullsh*t decreased to an all-time low. Oh well. They’ll get over it.

Long-time readers of this blog already know that I’ve delayed starting salvage radiation therapy because I’m reluctant to incur the short- and long-term side effects of radiation without having a higher degree of confidence that we’re actually zapping in the correct location(s)—zapping the cancer itself.

Of course, the current state of imaging for prostate cancer generally sucks, but it is getting better with advances like PSMA PET scans using 68Ga-PSMA-11 where prostate cancer can be located much earlier and much more accurately than using previous technologies such as bone scans. But even 68Ga PSMA PET scans have their limitations.

One of the greatest challenges (gambles?) in deciding when to start salvage radiation therapy is the timing. Most will argue the earlier, the better. Statistics show that in most cases, the cancer is still in the prostate bed or pelvic region, so the radiation oncologists start blindly zapping those regions hoping the statistics are correct. But the cancer could have already spread to more remote locations.

With my PSA doubling time in the 4-5 year range, my team and I have decided to hold off on salvage radiation therapy and, in so doing, I’ve avoided any radiation side effects for five years giving me a high quality of life during that time. That has value to me. Of course, none of us know whether the little buggers have been hanging out in the prostate bed during that time (like statistics would show), or if they’ve gone on one of their own infamous road trips and have started spreading.

One of the things that I’ve been trying to determine for months now is at what PSA level can the Ga68 PSMA PET scan begin to reliably pick up prostate cancer. The answer typically was in the 1.0 to 2.0 range for the PSA. With a PSA a fraction of that (0.21) the PSMA PET scan really wouldn’t be a reliable tool for me yet. It’s not a completely worthless tool, but there are decent chances that I could come away with a false negative result.

Tonight, I stumbled across this paper that provided some insights: Assessment of 68Ga-PSMA-11 PET Accuracy in Localizing Recurrent Prostate Cancer: A Prospective Single-Arm Clinical Trial.

The chart below taken from the paper was exactly what I was looking for and more. First, it shows the number of cases where patients with an increasing PSA after prostatectomy have positive results based on their PSA level. For those with PSAs less than 0.5 ng/ml (me), the number of positive cases was only 38%. In other words, there’s about a one in three chance that the Ga68 PSMA PET will be able to locate the cancer at that PSA level. Not good odds, but better than zero.

To me, the really interesting thing about this chart is that it shows the location of where the PSMA PET scan found the cancer by PSA level.

Fendler WP, Calais J, Eiber M, Flavell RR, Mishoe A, Feng FY, Nguyen HG, Reiter RE, Rettig MB, Okamoto S, Emmett L, Zacho HD, Ilhan H, Wetter A, Rischpler C, Schoder H, Burger IA, Gartmann J, Smith R, Small EJ, Slavik R, Carroll PR, Herrmann K, Czernin J, Hope TA. Assessment of 68Ga-PSMA-11 PET Accuracy in Localizing Recurrent Prostate Cancer: A Prospective Single-Arm Clinical Trial. JAMA Oncol. 2019 Jun 1;5(6):856-863. doi: 10.1001/jamaoncol.2019.0096. PMID: 30920593; PMCID: PMC6567829.

You can see that more than half of the cancer in patients with PSAs below 0.5 were found either in the prostate bed or pelvic region, both of which should be very treatable with salvage radiation therapy.

However, once the cancer is in other the other regions—extrapelvic nonbone (other organs), bone, or multiple regions—the cancer becomes very difficult if not impossible to treat. At that point, it’s only managed.

Please keep in mind that those are my non-expert opinions that I will have to confirm with my medical team to make sure I’m interpreting things correctly.

You can see that, as your PSA increases above 0.5 ng/ml, the cancer was found more broadly in the study participants. By that, I mean the cancer had spread beyond the prostate bed and pelvic region. You can also see, however, that even with PSAs less than 0.5, the cancer has already spread elsewhere in about 40% of the patients in the study with that PSA level.

That’s the whole point of knowing this. If the cancer has already spread, there’s no sense in zapping the prostate bed or pelvis risking long-term radiation side effects adversely impacting quality of life for no gain whatsoever.

This is only one study with 635 patients, so I am taking the results above with a healthy dose of skepticism, and I’ll continue to do more research in the three weeks before my appointment. But this study will be a good conversation opener for the consultation.

Some of the questions that are on the top of my bald head are:

  • Should we run another PSA test to see if this was an outlier/anomaly like some of my previous PSA tests (I’ve been using the same lab all along)?
  • How much weight does PSA doubling time have now that we’ve crossed the 0.2 ng/ml threshold?
  • Would he support getting the Ga68 PSMA PET scan done at this PSA level?
  • If not, at what PSA level would he support getting the PSMA PET scan?
  • Would he be willing to give me a referral to get one done even if I have to pay for it myself?

Fortunately, the US Food and Drug Administration approved the Ga68 PSMA PET scan at the University of California Los Angeles (UCLA), and that would be a 2.5-3 hour drive for me to get up there to have the scan.

In the meantime, I’m going to have to reconcile in my own mind how high I’m going to let my PSA get before taking action, scan or not.

Lots of research, thinking, and soul-searching ahead. But be forewarned: My trivial B.S. tolerance level is way less than my PSA. 🙂

Month 127 – PSA Results

I went for my originally scheduled six-month PSA test last Thursday and was able to look online last night to see the disconcerting results: A substantial increase to 0.21 ng/ml.

Breaking the 0.2 ng/ml threshold now officially puts me into the biochemical recurrence category, at least according to the long-held definition of biochemical recurrence.

Needless to say, I felt gut-punched on seeing the results. Sure, I’ve know for over five years that my trend has been upward, but I guess I got comfortable with it bouncing around the 0.10 to 0.16 range for the last few years. I wasn’t expecting such a substantial leap between my “surprise” PSA test in February and this one in June.

When it comes to PSA doubling time, it dropped from 67.7 months to 52.8 months with this latest test result included in the calculations. If I look at only the five most recent test results, the PSA doubling time drops to 46.5 months. Of course, all of those are great numbers that a lot of guys would like to have.

My appointment with the doctor isn’t until 6 July, and it will be an interesting conversation now that we’ve crossed that magical line of 0.2 ng/ml. In a way, I’m glad I’ve got several weeks to think this through and to come up with good questions to ask so that I’m prepared for the appointment.

Of course, salvage radiation therapy just moved to the top of the list of things to talk about. It will be interesting to see if their recommendation changes given the 0.21 number versus the long PSA doubling time.

Needless to say, there’s going to be much reflection and research in the weeks ahead.