Hello everyone,
I am 60 years old and was diagnosed with prostate cancer (Gleason score 9) that spread to the regional lymph nodes. On January 1st, both my urologist and medical oncologist determined that I will not benefit from surgery or radiation and put me systematic ADT (Eligard: 22 mg/3 months and Erleada: 240 mg/day). Since then, I went on a plant-based diet and my PSA dropped from 65.0 to 0.4, and Testosterone from 1100 to 10 as of 3/18/2010
On 3/16/2020, I did a Ga68 PSMA PET scan at UCLA and the report stated that the tumor sizes in the prostate and some of the lymph nodes have decreased and determined the following staging:
"Molecular Imaging TNM classification*:
miTNM Codeline: mi T0 N2(CIL,EIL,IIL,CIR) M1a(RP)
Legend:
Local tumor involvement (T)
T0 – No local tumor.
Regional nodes (N)
N2(CIL,EIL,IIL,CIR) – Common iliacal left, external iliacal left, internal iliacal left, common iliacal right lymph node
regions are involved.
Distant metastases (M)
M1a(RP) – Retroperitoneal lymph node regions are involved."
I would very much appreciate the community members help in answering the following questions:
1. Does T0 in the staging mean that all the tumor has been eradicated from the prostate? or just PSMA sensitive cells are killed but other tumor cells may still be in the prostate and how to go about this determination?
2. As my diagnosis stands now, will surgery, radiation, or Lu-177 therapy be beneficial to my case now?
Thank you for your feedback and advice.
If you treat the prostate with surgery or radiation, the time to castration resistance will be much longer than if you don't. Therefore I would do that. The retroperitoneal lymph nodes can be observed or controlled with ADT. Maybe in the future you will be allowed to remove these with Lu177.
Thank you for your prompt response. You mean use surgery and/or radiation on both the prostate and the lymph nodes?
You can choose radiation or surgery to get rid of the cancer in the prostate. With surgery you can have a lymph node disection to get rid of some affected lymph nodes, with radiation you can have the pelvis radiated.
However, radiating the pelvis has side effects and since you already have retroperitoneal lymph nodes, the radiation template will only cover a part of the effected lymph nodes. So this may cause lasting side effects without detectable benefit. Also, in the case of surgery, the lymph node disection will only remove a fraction of the affected lymph nodes.
Therefore I would just treat the prostate and leave the lymph nodes to be treated later with Lu177 or targeted SBRT radiation.
Here are links why it makes sense to treat the prostate even though mets are already detected:
esmo.org/newsroom/press-off...
redjournal.org/article/S036...