It depends on what area the previous treatment covered and how many units of radiation you received.
If the previous tx. was external beam radiation for prostate cancer, probably not.
It depends on what area the previous treatment covered and how many units of radiation you received.
If the previous tx. was external beam radiation for prostate cancer, probably not.
In that case I would get multiple opinions from good radiation oncologists - at least three if not more.
Also, if you are a surgical candidate, radiation in the anal/rectal area could also be a factor a surgeon would have to consider since tissue would invariably be affected even with low dose radiation.
All radiation is cumulative, so many low dose sessions are equal in impact to fewer high dose ones.
The initial side effects may be mitigated but longer term they are equal.
You're right @vp3.
"Cyberknife is a treatment using external beam radiation. It is the brand name of a machine that delivers stereotactic radiation therapy or "radiosurgery" (SRS) and stereotactic body radiation therapy (SBRT). Despite the name, Cyberknife does not involve a knife, cutting, surgery, or anesthesia for treatment. It uses a linear accelerator (a machine that makes radiation) on a robotic arm that allows the radiation beam to be delivered from thousands of directions. Cyberknife uses real-time image-guided radiotherapy (IGRT) to treat tumors in different parts of the body, including the prostate. What this means is that the motion of the tumor is tracked, and the radiation can be directed and delivered accurately based on the motion of the tumor." Read more here: https://www.oncolink.org/cancers/prostate/treatments/cyberknife-for-prostate-cancer
@colleenyoung I am scheduled for a consult for Monotherapy SBRT on April 23rd . 2025 .
I am currently on Active Surveillance , 4 Cores out of 16 Gleason 3 +3 = 6 with 2 Cores Gleason 3 + 4 = 7 . I am considering SBRT at this time and my query to the Radiation Oncologist will be
" Would you consider 2 Fractions of SBRT to the Gleason 7 Cores Only ? "
It's a curiousity question only . My Urologist, Dr Andrew Loblaw , at Sunnybrook Hospital in Toronto was involved in the : SBRT TOFFEE Meta Analysis - European Association of Urology .
which studied 2 Fractions vs 5 Fractions . He was also involved in the Phase 3 Pace " B " Trial .
I will keep you posted .
p.s. I am 85 years young and in otherwise excellent health , excepr for taking Dutasteride for
my BPH ( was previously on Flomax ) . I may well , at my age continue on AS .
@colleenyoung and @clandeboye1 I am scheduled for SBRT five (5) treatments starting April 9 ending April 21. My gold seeds (fiducial markers) were implanted on March 26.
I just had 5 sessions of cyberknife for lesions on my spine and a rib. The procedure was pain free, did not notice any side effects. Maybe some extra fatigue. Dr said it was successful. I will know more after a couple of months and another scan. Each session with set up was 45-60 minutes.
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It depends on what area the previous treatment covered and how many units of radiation you received.
If the previous tx. was external beam radiation for prostate cancer, probably not.
Had anal cancer in 2007 with 4 mos of low dose radiation because I’m a redhead and burn easily.
In that case I would get multiple opinions from good radiation oncologists - at least three if not more.
Also, if you are a surgical candidate, radiation in the anal/rectal area could also be a factor a surgeon would have to consider since tissue would invariably be affected even with low dose radiation.
All radiation is cumulative, so many low dose sessions are equal in impact to fewer high dose ones.
The initial side effects may be mitigated but longer term they are equal.
@colleenyoung I am scheduled for a consult for Monotherapy SBRT on April 23rd . 2025 .
I am currently on Active Surveillance , 4 Cores out of 16 Gleason 3 +3 = 6 with 2 Cores Gleason 3 + 4 = 7 . I am considering SBRT at this time and my query to the Radiation Oncologist will be
" Would you consider 2 Fractions of SBRT to the Gleason 7 Cores Only ? "
It's a curiousity question only . My Urologist, Dr Andrew Loblaw , at Sunnybrook Hospital in Toronto was involved in the : SBRT TOFFEE Meta Analysis - European Association of Urology .
which studied 2 Fractions vs 5 Fractions . He was also involved in the Phase 3 Pace " B " Trial .
I will keep you posted .
p.s. I am 85 years young and in otherwise excellent health , excepr for taking Dutasteride for
my BPH ( was previously on Flomax ) . I may well , at my age continue on AS .
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Like -
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Hug
1 Reaction@colleenyoung and @clandeboye1 I am scheduled for SBRT five (5) treatments starting April 9 ending April 21. My gold seeds (fiducial markers) were implanted on March 26.
-
Like -
Helpful -
Hug
1 ReactionI just had 5 sessions of cyberknife for lesions on my spine and a rib. The procedure was pain free, did not notice any side effects. Maybe some extra fatigue. Dr said it was successful. I will know more after a couple of months and another scan. Each session with set up was 45-60 minutes.