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5.02.07 My Own Case: Lymph Node Involvement, Prostate Cancer
Survivor, Prostate Cancer Spread To Lymph Nodes
My own battle with prostate cancer illustrates the
issues surrounding lymph node involvement. When I was diagnosed
in February 1999 I had a Gleason grade of 7 (3+4) and a PSA of
20.4 ng/ml. Furthermore, my health care team quickly found that
the cancer had spread to my seminal vesicles and to the lymph
nodes in my pelvis. Of even greater concern, the ProstaScint scan
detected a potentially abnormal node in the back of my abdomen,
suggesting that the cancer had spread beyond the pelvis. For this
reason, I took the added step of looking for cancer cells in my
blood and bone marrow. We used a technique that was not approved
for clinical use, but which is widely used in research laboratories:
the RT-PCR for prostate specific antigen (PSA) and prostate specific
membrane antigen (PSMA). RT-PCR identifies cells that are making
PSA and PSMA. The test operates on the assumption that if you
find prostate cells in the bone, blood, or lymph nodes, the cells
are probably cancerous simply because normal prostate cells would
never find their way to these locations. RT-PCR can detect one
cancer cell in one million normal cells, so it is quite sensitive.
Using this approach, my friend Dan Theodorescu detected cancer
cells in my blood and in bone marrow obtained from both sides
of my pelvis. Interestingly, RT-PCR still remains a research tool
not approved for the detection of metastatic prostate cancer.
Why? Because so far, many men with prostate cancer cells in their
bone marrow and blood have remained free of any detectable cancer
for years. As you learned in our last issue, these men may well
have been lucky enough to have cancer cells that remained dormant.
Faced with lymph node involvement, I decided to do whatever I
could to eliminate the cancer in my lymph nodes. Because of the
potentially abnormal lymph node at the back of my abdomen, I had
a surgeon remove all of the lymph nodes he could find from the
level of my kidneys to the point where the abdomen ends and the
pelvis starts. By 1999 several papers had already been published
on the use of radiation therapy to treat the lymph nodes in the
pelvis, especially those along the iliac arteries. While the advantage
of this approach remains controversial, I decided the potential
benefits far outweighed any possible risk. For the cancer cells
in my prostate gland and seminal vesicles, I elected to have 3D-conformal
radiation therapy plus radioactive seed implantation. I topped
all this off with eighteen months of Lupron, Casodex, and Proscar.
After those eighteen months, I remained on Calcitriol and Proscar—until
Avodart arrived to replace the Proscar because of its efficacy
in blocking dihydrotestosterone as well as testosterone.
Now, eight years after the diagnosis, my PSA remains undetectable
by the PSA ultra assay and I seem to be in complete remission.
Note that I do not use the word cure. I don’t regard myself
as cured, but simply in remission. I think it very likely that
dormant prostate cancer cells remain in my body in numbers too
small to detect. I will always be at risk for recurrence, but
continue to stack all the cards in my favor to prevent this.
To read more about lymph node staging, click here to purchase
Vol 8 # 12.
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