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Medical Forum / Diseases and Disorders / Prostate Cancer / June 2006

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IMRT Post RRP

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MAP - 23 Jun 2006 02:24 GMT
Hello All,

The radiation oncologist has suggested I have IMRT starting July 17 (my
surgery was on May 10).  This is simply a "pre-caution" I suppose, in
case there was something left behind.  He plans to do this in 28 daily
sessions, 180 units each time (he recommended 5000 units of IMRT).

My history:
PSA 30, G7 in Dec. 2005
Harmone Therapy pre-surgery reduced the PSA to 1.34 to 0.23 a day
before surgery
Post-surgery PSA - I'll know it in a few days
Post-surgery pathology - Lymph nodes were negative but there was
seminal vesicle involvement, everything else was negative.

I am wondering if this is too aggressive and the radiation dose is too
high/too soon!  Should I get a 2nd opinion?  I did get a 2nd opinion on
the surgery as well.

Thank you in advance for your comments.
Steve Jordan - 23 Jun 2006 04:58 GMT
> The radiation oncologist has suggested I have IMRT starting July 17 (my
> surgery was on May 10).  This is simply a "pre-caution" I suppose, in
> case there was something left behind.  He plans to do this in 28 daily
> sessions, 180 units each time (he recommended 5000 units of IMRT).
>  
What are those "units?" It's important to know.
> My history:
> PSA 30, G7 in Dec. 2005
[quoted text clipped - 8 lines]
> the surgery as well.
>  
What reason has been given by the rad onc for recommending IMRT? There
must be some sort of indication. When was the RP?

MAP's  questions cannot be answered, even by us non-medics, without much
more clinical data.

Regards,

Steve J
Steve Jordan - 23 Jun 2006 05:22 GMT
I just wrote:
>> The radiation oncologist has suggested I have IMRT starting July 17 (my
>> surgery was on May 10).  This is simply a "pre-caution" I suppose, in
[quoted text clipped - 15 lines]
> What reason has been given by the rad onc for recommending IMRT? There
> must be some sort of indication. When was the RP?
Oops. Surgery was May 10.

OK, this makes me wonder even more just why, exactly, IMRT is being
recommended at a time that's just a few weeks post-surgery. Weren't the
SVs removed at the time of RP? AIUI, this is standard procedure.

So what I recommend is this: gather every scrap of paper, every
document, every film. A pt has a legal right to this info. Then select
another oncologist and have him/her review the chart. Then meet and
discuss what (s)he recommends.

Regards,

Steve J
Alan Meyer - 23 Jun 2006 05:22 GMT
> Hello All,
>
[quoted text clipped - 16 lines]
>
> Thank you in advance for your comments.

I am not a doctor and my advice is probably worth less than I am
charging you for it.  But my thoughts on your dilemma are as follows.

First some assumptions:

1. I assume you have already been recently checked for
metastases via bone scan, prostatic acid phosphatase and any
other standard tests and gotten negative results.  With a PSA of
30 I would expect that the tests would have been done, and I
presume they came up negative or the doctor wouldn't have
performed the surgery.

Negative test results do not mean that you are metastasis free,
but positive results mean that you probably are metastatic and
further local treatment would be pointless.

If this first assumption is wrong, then you can skip the rest
of my thoughts.

2. PSA=30 is a high risk case.  It is more likely than not that some
cancer remains in the area around the prostate, although it is
possible that the doctor got it all, or that what remains will not
grow and spread.

3. Radiation is most effective when the cancer is small, weak
and localized.  If you are ever going to need radiation, it is better
to get it now than to wait.  The longer you wait, the more likely
it becomes that some cancer will have reached a spot that
the radiation does not reach.  The main reason for waiting
is not to postpone radiation, but to hope that you won't need
it at all - although there may also be some benefit to waiting if
healing from the surgery is not complete.

4. As you know, radiation is not without risk of negative side
effects, and in fact, radiation delivered immediately after
surgery and before healing has taken place may make
healing more difficult as well as adding whatever side
effects it would otherwise add.

If all of the above are true, then it seems to me that what your
doctor is doing is recommending a course of action that
places the greatest emphasis on saving your life.  He is
trying to maximize your odds of not dying of prostate cancer,
at the risk of some additional side effects - which may or
may not be serious - depending on the skill of the radiation
oncologist and the luck of the draw.

That seems like a reasonable and responsible thing for a
doctor to recommend, but may or may not be what you
wish to do.  If you choose not to follow the recommendation,
you should do so with full understanding of what you are
choosing.

What I think I would do in your situation is:

1. Try to find the best radiation oncologist you can find
and consult him or her for a second opinion.  Even though I
think your primary doctor is probably right, you and I are not
experts and since your life and health are at stake, I agree
with you that an hour's consultation with another expert
seems like a responsible thing to do.

A consultation will also give you a chance to evaluate the
rad onc.  Radiation specialists, like surgeons, can be good
or not so good.  The good ones get better results than the
not so good ones.

2. Tell the rad onc what your concerns are.  Ask him whether
he thinks radiation should be scheduled even if the PSA is
undetectable.  Ask him what he thinks the risks are in waiting
for the first sign of PSA before radiating.

3. In any blood tests you get, be sure to get tested for
testosterone and for indicators of metastasis along with
PSA tests.

If your testosterone is low, then your PSA test will not
be accurate.  It will mean that you're still seeing the effects
of the hormone therapy and can't yet tell how effective the
surgery was.

4. If, after your consultation with the rad onc, you decide
that radiation sounds like a good idea, go ahead and
schedule it.  It may take 30 days or more to line up the
people and equipment for treatment.

5. Arrange with the rad onc to have final blood testing
done shortly before the start of radiation, and come to
an agreement with him about what will be done based
on the results.

If there are indications of metastasis, then I would think
the radiation plan should be cancelled unless those
indications can be tracked down and shown to be caused
by something else.

If there is a solid rise in testosterone, but no detectable
PSA, then have a plan for what to do in that case.  It may
be you'll want to proceed anyway, or it may be that you won't.
It's better for you and the doctor to agree on which it will
be before it happens than to make last minute decisions
based on emotion.

I know all of this is very tough to deal with, but it sounds
like you're proceeding methodically and have a decent
chance at coming through with a good outcome.

Best of luck to you.

   Alan
Steve Kramer - 23 Jun 2006 11:19 GMT
> Hello All,
>
[quoted text clipped - 14 lines]
> high/too soon!  Should I get a 2nd opinion?  I did get a 2nd opinion on
> the surgery as well.

That's a tough one, MAP.  My numbers were very close.  PSA 16, G7, RRP in
December 00.  When the post-biopsy results came in with SVI, my doc was
fairly certain I'd be doing radiation by June.  However, I had two PSAs come
back <0.1 and we decided to wait and see.  Instead, I ended up doing
radiation by July of the next year.

I absolutely didn't want to do radiation in 2001.  Now, I'll always wonder
if I had, whether I'd be cured.  Probably not.

Signature

PSA 16 10/17/2000 @ 46
Biopsy 11/01/2000 G7 (3+4), T2c
RRP 12/15/2000 G7 (3+4), T3cN0M0 Neg margins
PSA  .1  .1  .1  .27  .37  .75
EBRT 05-07/2002 @ 47
PSA  .34 .22 .15 .21 .32
Lupron 07/03 (1 mo) 8/03 (4 mo), 12/03, 4/04, 09/04, 01/05, 5/05, 10/05,
2/06, 6/06
PSA  .07 .05 .06 .09 .08 .132 .145
Non Illegitimi Carborundum

juniper - 23 Jun 2006 15:00 GMT
> Hello All,
>
> The radiation oncologist has suggested I have IMRT starting July 17 (my
> surgery was on May 10).  This is simply a "pre-caution" I suppose, in
> case there was something left behind.  He plans to do this in 28 daily
> sessions, 180 units each time (he recommended 5000 units of IMRT).

Our surgeon said 2-3 months after surgery, to allow the surgery to
heal.

> My history:
> PSA 30, G7 in Dec. 2005
> Harmone Therapy pre-surgery reduced the PSA to 1.34 to 0.23 a day
> before surgery

This is too bad it didn't go lower.  How long were you on the HT before
surgery?  What was your Testosterone then?

> Post-surgery PSA - I'll know it in a few days

Your post-surgical PSA is probably affected by the hormone therapy so
may not tell you much.  However, even without HT it would probably be
low.  I don't think that is an indicator that you're home free.

> Post-surgery pathology - Lymph nodes were negative but there was
> seminal vesicle involvement, everything else was negative.

What does your pathology report state?  The real report, not whatever
summary the doc gave you.  What was your post-surgical Gleason?  Extra
capsular extension?  Can you type it in here (the path report)?

Some studies indicate seminal vesicle involvement is worse than lymph
node involvement for recurrence.

<quote> Invasion of the seminal vesicle tissue, has generally been
found to significantly worsen the prognosis more than extra-capsular
extension alone,19,22,27,29  with a 5 year progression-free rate as low
as 5% in men who have seminal vesicle invasion without lymph node
metastases at the time of surgery.
http://www.uscap.org/newindex.htm?92nd/companion10h2.htm

<quote>Invasion of the seminal vesicle tissue, has generally been found
to significantly worsen the prognosis more than extra-capsular
extension alone,19,22,27,29  with a 5 year progression-free rate as low
as 5% in men who have seminal vesicle invasion without lymph node
metastases at the time of surgery.
http://www.uscap.org/newindex.htm?92nd/companion10h2.htm

<quote>(v) Lymph node & seminal vesicle involvement
Although clearly in the minority, some men with microscopic N(+)
disease have undetectable PSA levels at 5-10 years. Progression in N(+)
disease appears to be related to the volume of tumour in the lymph
nodes. As well, not all men with seminal vesicle involvement have poor
outcomes (464).

<quote>Despite the observation that seminal vesicle and lymph node
involvement are associated with poor results post-prostatectomy, in the
Catalona series, at seven years the disease-free survival rates were
26% for men with seminal vesicle involvement and 9% for men with N(+)
disease (337). There also appears to be a difference if seminal vesicle
involvement is a direct extension from the primary tumour, in which
case it behaves more like an extracapsular extension rather than a
separate metastatic focus which implies systemic involvement.
http://www.endotext.org/male/male10/ch01s09.html

> I am wondering if this is too aggressive and the radiation dose is too
> high/too soon!  Should I get a 2nd opinion?  I did get a 2nd opinion on
> the surgery as well.

As far as too soon, the studies are clear that salvage radiation has
the best chance of success when done while PSAs are below .1.   Second
best is below .2.  The cure-curve drops off pretty rapidly after that.
As far as how hormone therapy relates to those facts, I don't know.
Since hopefully your HT will make your PSA undetectable.

If the radiation is 50 Gy, then it is defiinitely not too high.  It
could be too low.  Normal radiation, I would guess, is 75-85 Gy, and I
think in England they do 65 Gy.  I would get another consult with
another rad onc, too, because once you get radiation that's it.  You
can't say, oh, that wasn't enough, and then go back with another dose.
I think that "cleanup" radiation can use less Gy, but your pretreatment
PSA is not promising.

To copy Alan, my opinion is worth what you're paying for it, but my
husband (age 49) is getting IGRT (Tomotherapy) three months after an RP
that had extraprostatic extension, lymph node involvement, and no
seminal vesicle involvement.

> Thank you in advance for your comments.

Hope it helps.  If we had more information we could provide more.

best wishes, laurel
Alan Meyer - 23 Jun 2006 16:21 GMT
> ...
> If the radiation is 50 Gy, then it is defiinitely not too high.  It
[quoted text clipped - 5 lines]
> PSA is not promising.
> ...

Does anyone know what the standard treatment dose is for salvage
radiation?

I have read that modern primary treatments specify 74 Gy or more,
but I always assumed that the great majority of those xrays were
treating the prostate itself - which is missing in the case of salvage
radiotherapy.

   Alan
Dave P - 23 Jun 2006 19:08 GMT
Alan,

I was told 68gy was good, 70 was better, 72 is best. That was 3.5 years
ago.

I was also told that with 70gy and above there is an increase chance of
adverse side effects. The higher the dose the more side effects after
70gy.

Of course new machines and techniques are getting better daily and
things have and will change for the better. We know that the higher the
dose the more chance there is for a cure. But all of those studies were
done when the prostate was intact. At this time I would say most Dr's
would recommend at least 68gy for salvage radiation on 3D, IMRT, IGRT
etc.

Dave P

> > ...
> > If the radiation is 50 Gy, then it is defiinitely not too high.  It
[quoted text clipped - 15 lines]
>
>     Alan
Glowing in the Dark - 23 Jun 2006 19:54 GMT
>> ...
>> If the radiation is 50 Gy, then it is defiinitely not too high.  It
[quoted text clipped - 15 lines]
>
>     Alan

My understanding that it has nothing to do with the amount of tissue being
irradiated but rather with the resistance of certain cancer cells to specific
radiation levels.  There are some cells which are resistant below 74 Gy which
is why there is optimism for better results with the higher doses made
possible by IMRT.

Signature

Glowing in the Dark

Alan Meyer - 24 Jun 2006 06:05 GMT
> ...
> My understanding that it has nothing to do with the amount of tissue being
[quoted text clipped - 3 lines]
> possible by IMRT.
> ...

That makes a lot more sense that what I was thinking.

I had hormone therapy before HDR brachytherapy and 3DCRT.
When it came time to do the brachy procedure, my rad onc
said that my prostate was tiny, the HT had shrunk it way down.

I asked, "Does that mean you can use less radiation?"

She answered, "It doesn't work that way, you still need the
same amount."

I didn't ask for further explanation but I can see now what
she probably would have said.

   Alan
Dave P - 23 Jun 2006 15:34 GMT
MAP.

Your oncologist is taking the very agressive route. With your post
surgery pathology it is usually what doctors recommend. Studies have
shown that IMRT given after RP within three months is highly effective
- even for high grade disease.

Your post PSA will be a major factor. If it is <0.1 you have some time
to think about things. If it is above 0.1 then the IMRT decision may be
a bit easier to make.

It would be best to get a 2nd opionion from another qualified
oncologist. You need all the information possible to make the best
choice.

Never quit and do what you have to do to defeat the disease.

Dave P

> Hello All,
>
[quoted text clipped - 16 lines]
>
> Thank you in advance for your comments.
MAP - 23 Jun 2006 19:00 GMT
Thank you all for your comments, I really do appreciate them.  This may
sound strange, but while reading the responses I suddenly felt like I
now have a second family.  I will always be grateful to you all.

After the visit with the Rad Onc. yesterday, I discussed the situation
last night with my Euro, summary of the discussion is as follows:

- There is no study to suggest that the radiation needs to be done so
soon after the surgery,   recommendation is to wait a while till I have
full "control" of the incontinence (I am "almost" there, may need a few
more weeks).  The Euro and the Rad. Onc. are going to have a discussion
on Monday, and if they don't come to an agreement, I am getting another
Rad.O. involved (I still have 3 weeks).  I do like and have excellent
communication with both.

- My PSA post surgery is undetectable (it's zero).

To answer some of your questions:

- I had 2 HT shots, one for 6 weeks (Jan 06), the second was for 12
weeks (Feb 06), the third was to be in May but I cancelled that and had
RRP instead.

- Pre-op:  All the tests like MRI, bone scan etc. were done and were
negative - they all suggested an organ confined disease.

- Post-op Pathology:  Gleason was 7, it confirmed the biopsy.  Lymph
nodes (several dozen samples) were all negative.  Seminal V.
involvement was noted.

Thanks again!
Bill - 23 Jun 2006 19:14 GMT
I was going to point out the same thing that Laurel did - that SVI is
generally associated w/ a high risk of systemic disease that will not
be affected by SRT. Indeed, the med-onc I saw at Vanderbilt last month
said that he NEVER recommended SRT for men w/ SVI. That may be a little
extreme but you might inquire what experience the docs you are talking
to have w/ SVI cases. In the long run it may be helpful to have a
couple of post-RP PSAs for a baseline.

Laurel, I think we went over this before. It stands to reason that the
earlier the better but the no. I have most often heard is SRT before .6
- I have never heard that it falls off after .2.

Has IMRT become the standard for SRT? The rad-onc I saw at M.D.
Anderson in 2004 said regular 3D was sufficient for salvage as opposed
to primary Tx.

Bill Denton
RP 2/12/02
PSA .96
Memphis
Dave P - 23 Jun 2006 19:34 GMT
Bill,

That's to bad because there was a report that even with SVI there was a
30% chance for psa progression free survival at 5 years.  I will track
it down. At the very least it gives some hope for men with SVI.

Dave P

> I was going to point out the same thing that Laurel did - that SVI is
> generally associated w/ a high risk of systemic disease that will not
[quoted text clipped - 16 lines]
> PSA .96
> Memphis
Dave P - 23 Jun 2006 19:46 GMT
Int J Radiat Oncol Biol Phys. 2005 Mar 1;61(3):714-24. Related
Articles, Links

Improved biochemical outcome with adjuvant radiotherapy after radical
prostatectomy for prostate cancer with poor pathologic features.

Vargas C, Kestin LL, Weed DW, Krauss D, Vicini FA, Martinez AA.

Department of Radiation Oncology, William Beaumont Hospital, 3601 W.
Thirteen Mile Road, Royal Oak, MI 48073, USA.

PURPOSE: The indications for adjuvant external beam radiotherapy (EBRT)
after radical prostatectomy (RP) are poorly defined. We performed a
retrospective comparison of our institution's experience treating
prostate cancer with RP vs. RP followed by adjuvant EBRT. METHODS AND
MATERIALS: Between 1987 and 1998, 617 patients with clinical Stage
T1-T2N0M0 prostate cancer underwent RP. Patients who underwent
preoperative androgen deprivation and those with positive lymph nodes
were excluded. Of the 617 patients, 34 (5.5%) with an undetectable
postoperative prostate-specific antigen (PSA) level underwent adjuvant
prostatic fossa RT at a median of 0.25 year (range, 0.1-0.6)
postoperatively because of poor pathologic features. The median total
dose was 59.4 Gy (range, 50.4-66.6 Gy) in 1.8-2.0-Gy fractions. These
34 RP+RT patients were compared with the remaining 583 RP patients.
Biochemical failure was defined as any postoperative PSA level > or
=0.1 ng/mL and any postoperative PSA level > or =0.3 ng/mL (at least 30
days after surgery). Administration of androgen deprivation was also
scored as biochemical failure when applying either definition. The
median clinical follow-up was 8.2 years (range, 0.1-11.2 years) for RP
and 8.4 years (range, 0.3-13.8 years) for RP+RT. RESULTS: Radical
prostatectomy + radiation therapy patients had a greater pathologic
Gleason score (mean, 7.3 vs. 6.5; p < 0.01) and pathologic T stage
(median, T3a vs. T2c; p < 0.01). Age (median, 65.7 years) and
pretreatment PSA level (median, 7.9 ng/mL) were similar between the
treatment groups. Extracapsular extension was present in 72% of RP+RT
patients vs. 27% of RP patients (p < 0.01). The RP+RT patients were
more likely to have seminal vesicle invasion (29% vs. 9%, p < 0.01) and
positive margins (73% vs. 36%, p < 0.01). Despite these poor pathologic
features, the 5-year biochemical control (BC) rate (PSA <0.1 ng/mL) was
57% for RP+RT and 47% for RP (p = 0.28). For patients with
extracapsular extension, the 5-year BC rate was 52% for RP+RT vs. 30%
for RP (p < 0.01).

The 5-year BC rate for patients with seminal vesicle invasion was 60%
for RP+RT vs. 18% for RP (p < 0.01).

For those with positive margins, the 5-year BC rate was 64% for RP+RT
vs. 27% for RP (p < 0.01). The use of adjuvant RT remained
statistically significant on multivariate analysis when applying either
biochemical failure definition. Adjuvant RT also remained statistically
significant when including the postoperative PSA level (>30 days after
surgery) in the multivariate analyses. In addition, 99 (17%) of the 583
RP patients required salvage prostatic fossa RT (median dose, 59.4 Gy)
at a median interval of 1.3 years after surgery (range, 0.1-8.4) for a
palpable recurrence (n = 10) or a detectable/rising postoperative PSA
level (n = 89). The median PSA level before salvage RT was 0.8 ng/mL
(mean, 3.2 ng/mL). The 5-year and 8-year BC rate, using the PSA <0.1
ng/mL definition, from the date of salvage RT was 41% and 35%,
respectively. The 5-year and 8-year BC rate, using the PSA <0.3 ng/mL
definition, was 46% and 36%, respectively. The 8-year local recurrence
rate after salvage RT was 4%.

CONCLUSION: Adjuvant RT demonstrated improved efficacy against prostate
cancer. For patients with poor pathologic features (extracapsular
extension, seminal vesicle invasion, positive margins), adjuvant RT
improved the biochemical outcome independent of other prognostic
factors.

Can't find the recent 30% study at 5 years.

Oh well.

Dave P
Bill - 24 Jun 2006 16:05 GMT
Thanks for that study, Dave. One wonders how an oncologist could
maintain such an extreme position in the face of data like that. I
suppose the easiest explanation is that he never read it. :-/

A troubling datum from that was that only 47% of the RP-only group had
a 5-year freedom from progression.

Bill Denton
RP 2/12/02
PSA .93
Memphis
juniper - 24 Jun 2006 02:03 GMT
> I was going to point out the same thing that Laurel did - that SVI is
> generally associated w/ a high risk of systemic disease that will not
> be affected by SRT. Indeed, the med-onc I saw at Vanderbilt last month
> said that he NEVER recommended SRT for men w/ SVI. That may be a little
> extreme but you might inquire what experience the docs you are talking

There is the (possible) value of further debulking.  Is it worth the
SEs?  Who knows.

> to have w/ SVI cases. In the long run it may be helpful to have a
> couple of post-RP PSAs for a baseline.

True.

> Laurel, I think we went over this before. It stands to reason that the
> earlier the better but the no. I have most often heard is SRT before .6
> - I have never heard that it falls off after .2.

I did it again, Bill, I'm so sorry.  Whoever is reading this--Bill is
right.  The numbers I should have put are 1. and 2.

<quote>
The pre-RT PSA level has been the most consistent predictor of FFBF in
univariate and multivariate analyses. 2-5,7,11,14,17,48,50,56,60,63-66
Table 3 displays the importance
of this parameter. A strict pre-RT PSA cutpoint has not been defined,
but the evidence suggests that lower pre-RT PSAs are associated with
higher FFBF rates. The best results have been seen when the pre-RT PSA
is < 1 ng/mL. A significant decline in FFBF is seen with the pre-RT PSA
cut point is increased from < 1 ng/mL to 1.1 to 2, and then to >
2ng/mL.    Table 4 displays other important prognostic factors

> Has IMRT become the standard for SRT? The rad-onc I saw at M.D.
> Anderson in 2004 said regular 3D was sufficient for salvage as opposed
> to primary Tx.

Our rad onc said, about IGRT, that "I used to think I could target the
cancer, but I couldn't.  He loves his tomotherapy system.  As far as
killing cancer, I would think most  would do.  As far as having enough
control to avoid side effects, supposedly the more degrees you have the
better.  The cleaner you can "draw" your irridation, the less
collateral damage.  We saw the program that has our RT planned, and it
wraps around the colon like a horseshoe.  About 1/4 of the colon is
getting irridiated, which is necessary because of the proximity of the
(ex)prostate.  Still, 2/3s of it is getting zero radiation.  His hip
bones (drawing a blank on the word-the top of the femur) are getting
5Gy.   The lymph nodes (Steve was positive) that the prostate drains
into are drawn very closely.  Its not a big scatter of radiation
through his whole pelvis at all.  You can't do this with 3D conformal.
3D conformal has 3 angles to "draw" the field with.  IMRT has 6-7
angles.  IGRT has "effectively 360 degrees".

Our rad onc is getting a "printer" that can put all scans and the Tomo
treatment plan on CDs you can put in your home computer.  If I can, I
will put this online.  It is way cool to see.  You can kind of tell
what its like from the tomotherapy website, but you can't tell that it
is truly 3-dimensional.  The bladder, for instance, may be 3" across at
one point, but as you scroll through the CT scan, it gets smaller and
smaller till it is off the screen.   And other body parts begin to
appear.  The tomotherapy can follow these body parts in 3 dimensions.
So they are outlined in colors that indicate the radiation
prescription.  And the parts they want spared are also outlined.  Then
the radiation dosimeterist and the software figure out a way to ensure
the doses get done as scheduled and minimize the parts that are marked.
The machine calculates actual Gy for every area, throughout this
procedure.  The daily CT scan matches the body parts with the treatment
plan and makes adjustments.

Sorry, didn't mean to go on and on.  At one point I wondered what the
point of going with high-control RT was, with salvage radiation.  I can
see now that all that control is useful.  

laurel
Beverley - 24 Jun 2006 16:05 GMT
That is so neat. I'd love to see it.
Bev

> > I was going to point out the same thing that Laurel did - that SVI is
> > generally associated w/ a high risk of systemic disease that will not
[quoted text clipped - 69 lines]
>
> laurel
juniper - 24 Jun 2006 18:11 GMT
> That is so neat. I'd love to see it.
> Bev

You can see the MRIs with the different targets drawn at
http://www.tomotherapy.com/clinician/casestudies.htm but you just can't
see the 3D effect as they scroll through different layers.  If there is
any way to post it for download or something, I will do that.
Alan Meyer - 24 Jun 2006 06:05 GMT
> ...
> Has IMRT become the standard for SRT? The rad-onc I saw at M.D.
> Anderson in 2004 said regular 3D was sufficient for salvage as opposed
> to primary Tx.
> ...

Two rad oncs told me the same thing about supplementary radiation
for brachytherapy.  They said that there was no advantage to IMRT
over 3D for what I was getting.  But I never learned the reason why.

   Alan
MAS - 24 Jun 2006 00:35 GMT
As most know on this list, I do not think that you can get too aggressive.
After the IMRT, I would chase it with chemo. Some will disagree, so check
with your oncologist.

My reasoning is simple. When people talk about cancer, usually they think in
terms of a solid mass tumor - cut it out and you are home-free. I think that
you will find that cancer spreads through micro-fibers too small to be seen
on any test developed as of yet, that float around in your vascular
highways, streets and avenues until they find a home to latch onto. Hence,
distant metastasis. Once the cancer has escaped its local or home base, it
is present in your body somewhere and the only method of measuring is the
PSA draw with an eye toward upward movement and the term velocity.

Another thought that I have is that the cancer started in the first place by
a inherited defective gene. Until the gene is modified, it will always
produce mutated cells that could be cancerous, ie, cells that grow
abnormally. So whatever treatment is available to stun, delay, stop cancer
growth, it is a matter of time before the mutated gene starts the process
over. Now most of us will be long gone through normal aging before the
happens in some cases. it all depends on how aggressive the cancer is that
is being created. So delaying tactics are good. They lengthen the time that
we have on this Earth.

Take care Friend and as our fellow poster writes:  Non Illegitimi
Carborundum

> Hello All,
>
[quoted text clipped - 16 lines]
>
> Thank you in advance for your comments.
 
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