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.
One thing that I’ve learned along this journey is that every doctor has his or her own take on the situation and what should be done, and very few of those opinions match. They can’t even agree on standard definitions.
This afternoon’s meeting with yet another urologist proved to be interesting at best and a tad frustrating at worst.
He was a younger doctor but the interesting thing was that he held to the belief that I haven’t had a biochemical recurrence yet and won’t until I hit the magical 0.2 ng/ml. I was a bit taken aback by that given what everyone else has been telling me for the last two years. He also talked about the newer ultra-sensitive PSA tests, but hung on to the definition that anything less than 0.1 ng/ml was “undetectable.” In his mind, my PSA at 0.13 was “very low.”
We talked at length about my PSA doubling time, and that was one area that we came to consensus on. That having a PSADT of more than two years was a good thing. He seemed quite interested in seeing the results of the Memorial Sloan Kettering PSADT calculator, which had my doubling time at 35 months (based on only four data points because their calculator accepts only those values >= 0.1 ng/ml). (I also had my PSA tracking chart printed out and sitting on his desk when he walked in.)
I asked him about what his experience was with dealing with the long-term side effects of salvage radiation therapy as a urologist—how frequently they occurred and what severity they were. He went through the list of things that I had already known, and said in his “whole career” he had seen only three or four cases that were significant. (Note: His “whole career” spanned all of six years. I’ve had cancer 8 years.)
Lastly, we talked about the Ga68 PSMA imaging trial going on at UCLA. It was clear he was aware of the research, but wasn’t at all familiar with the details or requirements of the trial. I didn’t expect him to be well-versed on the topic, but it was clear that I knew a bit more about it than he did, especially when it came to the requirements to participate, (I didn’t tell him that I had actually contacted UCLA.)
He did ask me if I had a PSA threshold in mind where I would want to take action when it comes to salvage radiation therapy. In my mind, if we get into the 0.15 or above range and the PSADT starts to shorten, I’ll have to strongly consider the next steps. But I did bring up the Freedland study that shows, with my numbers, I can do nothing and have a 94% chance of being around in 15 years.
Normally, I don’t mind seeing younger doctors because sometimes they’re more familiar with the latest research and current treatment philosophies than their older counterparts. I’ll take his input with a grain of salt considering how he’s not in line with the thinking of some of the others that I’ve seen in the last year or two.
In the end, we agreed to kick the can down the road and do another PSA test in four months in April 2019.
I’m still interested in speaking with a radiation oncologist about this again. I may try emailing the one I saw in May or just ask for another referral after the beginning of the new year.
It was a bit of an odd consult. I’ll just forge my own path forward and we’ll see where that leads. In the meantime….
Wishing you all a very Merry Christmas and the healthiest, happiest New Year possible!
When I was in 7th grade, I had to give a presentation on my science project, an erupting volcano, and I was so anxious about the presentation that I became physically ill and erupted myself. Not pretty. While I didn’t get physically ill today, the feeling was almost the same as I waited to see the radiation oncologist. It’s silly, I know. But it was very real.
In a nutshell, his recommendation was to start salvage radiation therapy.
The R.O. is a Navy captain medical officer, and we spent nearly forty-five minutes going over my case (which I truly appreciated). He took control of the conversation from the outset, explaining the options and consequences of each. I could tell that he had given this little presentation once or twice before. Once we got through that, we did have a real conversation. Some key points:
He disagreed with the notion that the increasing PSA is from residual benign prostate tissue left behind.
He was confident that the cancer would be in the prostate bed based on my numbers and statistics.
He talked about the differing definitions of biochemical recurrence, saying that the American Urological Association (AUA) and American Society for Radiation Oncology (ASTRO) use the 0.2 ng/ml threshold, but the National Comprehensive Cancer Network (NCCN) defines recurrence as a detectable PSA with two consecutive increases. My case meets the NCCN definition.
Continued surveillance is a viable option for me given my numbers and PSA doubling time.
We talked about the short and long-term side effects of radiation therapy: urinary control, sexual function and bowel control. His estimate the probability of long-term quality of life-impacting side effects in any of the three areas to be in the “single digits.”
He reminded me of selection bias when talking to other patients or bloggers about their side effect experiences. Yes, their experiences are very real, but for each person in an online forum, there are many others outside the forum who are leading productive, acceptable lives.
If we were to do salvage radiation therapy now with my PSA under 0.2 ng/ml, he put the probability of me having no evidence of disease five years from now at seventy-five percent. If we wait until my PSA is above 0.2 ng/ml, that number decreases.
Newer scanning technologies weren’t likely to pick up anything at my current PSA levels, yet he was open to the idea of them if it gave me peace of mind.
With my numbers, there is no reason to radiate the pelvic lymph nodes or use androgen deprivation therapy (ADT).
He was open to waiting until the August PSA results to see what they revealed before making a decision.
It was a good conversation, but I’m sorry to say that I don’t know that there was a lot of new information for me there that would tip the scale either way. The doctor wasn’t pushy in one direction or the other, saying that it was equally reasonable for me to continue surveillance or for me to begin salvage radiation therapy. The choice is mine. About the only thing he was adamant about was not starting ADT, and I’m in perfect agreement with him on that.
I did learn one really interesting thing, however. The reason that the VA Medical Center referred me to Naval Medical Center San Diego has to do with geology. Apparently VA Medical Center San Diego (La Jolla) was built sufficiently close to a geological fault line that they couldn’t build a radiation “bunker” that would be safe in the event of an earthquake.
What’s next for me? A ton of thinking, reflecting, and reevaluating.