Not sure how you could have seeds after RP. Post may need a correction.
Ron S

   I had EBRT three months after RRP due to visible cancer  on the surface
of the bladder. That was about 5 1/2 years ago. For the seven weeks of
radiation treatments, the only SE's were minor bladder spasms and diarrhea,
both of which started well into the program. They did not shield the
bladder, or maybe not as much as normal, due to known cancer at that site.
It maybe would not have been too major a problem had I not been driving 50
miles to go to work after each session and restroom facilities were not
always where you needed them. I learned about Imodium AD and Metamucil and
with the Imodium especially was able to carry on pretty much like normal.
Without the Imodium I would have had a major problem, and  a friend of mine
who went through a similar scenario of RRP followed by EBRT was not able to
function at work due to the frequency and urgency of bathroom visits. After
I told him how I did it, he tried the Imodium and said it made all the
difference in the world. Another elderly friend who went with seeds
developed pretty major diarrhea and again was "saved" by the same little
pills. I do not know if he still relys on them or not. The first guy does,
as do I.
   After a couple years, when they said that after two years "what you have
is what you got" in regards to SE's from radiation,  I continued to go
downhill with increasing bladder spasms and incontinence. An artificial
urinary sphincter was finally put in a little over a year ago and works
pretty good, and medications help quite a bit with the spasms. I had pretty
extensive EBRT so maybe fared a little worse than some? I hear of guys who
do not experience many problems from the radiation, so I do not know what is
average.
   In summary, the EBRT for me resulted in probable permanent colon
problems which are controllable, and bladder spasms whic are mostly
controlled, and I would have major incontinence if not for the implant. I
hear that new things may be on the horizon for incontinence control. A MAJOR
point here is that none of this really impacts my lifestyle or my activities
too much. The Lupron now, that's another story! I am thankful for the tools
we have to fight this thing, even the Lupron, and the tools we have to
minimize the SE's. Good luck in your research,

 Even just any experience with RT after RP would be

laurel wrote..."Even just any experience with RT after RP would be
nice."

I had EBRT Oct-Dec, 2003, after a failed Feb, 2002 RRP, thanks to
positive margins at the apex; 66 Gy over a 6 week period, IIRC. I had
diarrhea after the first treatment but only an occasional loose BM
after that, that I can recall. Most of my problems had to do with
constipation and what I thought were radiation burns to the rectum.
They turned out to be fissures caused by a strained BM, and cleared up
on their own over the following year. The hospital staff could have
done a better job of coaching me about the importance of a low fibre,
low residue diet, I felt.

The only remaining SE is light proctitus in the form of minor mucus
discharge with some BMs. This is caused by the intestinal lining still
dying off, I believe. It has never been a problem but has stollen the
pleasure of a good fart, if I may be so crude. :o) One constantly
worries that more might pass than just wind, so you learn to control
such urges until on a toilet, and then nearly explode. I think that I
may tire more easily but it's hard to say; I have been taking naps for
an hour after lunch as my tinitus gets bothersome when I get tired and
my ears start ringing around that time. I'm 65, retired and don't have
a lot of stamina but honestly don't know what role RT plays in that.
Not much, I suspect.

My pre-op PSA was 3.9 and pGleason 6. The cancer was detected by
pathological examination of the corings from a TURP. PSAs were
undetectable the first year post-RRP, but after three successive
increases (0.05, 0.09, .12) my urologist sent me for EBRT. It has been
undetectable in the 2.5 years since that finished.

Good luck to Steve and you.

Larry