Imaging Prostate Cancer
Posted: Nov 01, 2018
POSTED: August 24, 2017
Stan P. has neuroendocrine prostate cancer. He spoke with Prostatepedia about his experiences with this aggressive form of prostate cancer.
Stan P: It was a PSA taken by my primary physician. It was taken kind of late. It came out to be 6.2, which is fairly high. After that, I started consulting around trying to find a doctor to treat me. That was back in 2006.
Stan P: I was taking Zytiga (abiraterone) for almost two years. The physician was also running blood tests. One of the substances in the blood test that stood out was this bone-specific alkaline phosphatase. It started to go up while at the same time my PSA was undetectable. It had reached undetectable status about a year after taking Zytiga (abiraterone).
The physician saw this one level going up, so he prescribed an F18 sodium bone scan along with a couple of other specialized blood tests. One of the blood tests was LDH, which I think detects cellular injury. Another was chromogranin A that detects neuroendocrine tumors. The third one was CEA, carcinoembryonic antigen, a marker for colon and thyroid cancer.
The one that stood out was the chromogranin A. It was high. At the same time, the F18 scan showed two neuroendochrine tumors. One was in the ileum (the end of the small intestine) and the other one was in the C5 vertebrae. With the undetectable PSA, these results from the scan, and some of the blood results, the physician suggested that it was probably neuroendocrine, which I didn’t even understand at the time.
He said something about adenocarcinoma being differentiated into this neuroendocrine tumor. From that point, his recommendation was to try some platinum-based chemo. I was not feeling any symptoms. I was not in any pain, and I was still doing my normal thing. He recommended that I undergo Xofigo (radium-223).
Stan P: I was still on Zytiga (abiraterone) when all this happened. He took me off later because my kidneys started to show side effects from it—high creatinine. He took me off of that to see if it would lower the creatinine levels, and it did, so he kept me off it. I continued to take an androgen agonist (degarelix), which I’m still taking.
Stan P: I had no idea what a neuroendocrine tumor was. I didn’t even know what a PSA was. I got this medical explanation, and then when I started delving into it on the Internet, I found out that only 1% of the prostate cancer patients get this or have this condition. Then I knew it was serious.
There really are no cures. I consulted with two other prostate specialists. One was the chief of hematology and the other was the chief of prostate cancer research at a teaching hospital. One doctor said that he treats this through standard-of-care treatment, which means platinum-based chemo. The other doctor told me to go back on the Zytiga (abiraterone), which really didn’t make any sense. My understanding is that this neuroendocrine tumor does not have any androgen receptors. But the real issue is there aren’t many doctors around who spend a lot of time with this type of cancer.
Stan P: I just went through six months of Xofigo (radium-223) and completed that at the end of March. The recommendation has been to wait for three months and get a scan then. In the meantime, I take Firmagon (degarelix). During the six months on Xofigo (radium-223), I had a couple of scans. One was a technetium-99 bone scan, which was performed after two treatments with Xofigo (radium-223).
The strange thing was they only found one neuroendocrine cancer in the ileum. They did not find the one at the C5 vertebrae. Maybe the F18 was oversensitive to the scan. I don’t know.
At the same time, I entered a clinical trial for C11 Acetate PET/CT scan. They were giving me these C11 Acetate PET/CT scans every month, and I decided I should stop doing that because it was affecting my blood counts too much. I had two C11 Acetate PET/CT scans, and both were uneventful. They didn’t find anything, which I kind of expected because my PSA is undetectable. They did not detect any of the neuroendocrine tumors either.
Since ending the Xofigo (radium-223), I have not had any scans. I’m waiting another month, and then I’ll get another scan to see the effect of that. During the time I was undergoing Xofigo (radium-223), the blood tests were becoming much more positive. The bone-specific alkaline phosphatase went down to normal levels. That indicated that maybe the tumor was not growing anymore. The plan right now is to just stay on Firmagon (degarelix) and get another scan in another month. Treatment will be scheduled then.
Stan P: First, make sure you actually have a neuroendocrine tumor. Then consult with a doctor who specializes in neuroendocrine prostate cancer. I found a nationwide list on the site carcinoid.org. And just keep the faith. I have a positive outlook that something’s going to come to help me either put off the growth of this tumor or to cure it. I keep looking, and that’s about all I can do. Just keep the faith.
Stan P: I would recommend that the doctors educate themselves on the ongoing clinical trials for this disease. Even if they don’t know about any while the patient is visiting them, they should at least tell the patient that they will do research themselves. I’m sure doctors have a better way of finding these things out than the layman.