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Medical Forum / Diseases and Disorders / Prostate Cancer / May 2004

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Report on new PSA study

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Leonard Evens - 27 May 2004 14:40 GMT
I just read Gina Kolata's article in the N Y Times on a new study which
shows that up to 15 percent of older men with PSA less than 4 ng/ml show
the existence of prostate cancer on biopsy.  Kolata has been grinding an
ax on the subject of whether early testing for cancer is useful or not
for several years now.  In the past, she has shown she doesn't really
understand prostate cancer.  At one point, it was clear that Scardino at
Sloan Kettering had got to her and educated her some on the subject, but
now she seems to have backtracked.

I have to go to the library to read the article describing the study,
since the results as stated may need some qualification.  I can't
imagine how they got a significant number of men with normal PSA and no
other indications to submit to a biopsy, for example.   But the results
are not specially surprising.  It has been known for quite a while that
a significant number of men with PSA below 4 have prostate cancer.
Previous studies have suggested that as many as 25 percent of prostate
cancer cases do not involve an increase in PSA levels.   But as all of
us here know, it is not that simple.   There are other tests such as
free PSA, PSA velocity, etc. which are used to determine when to do a
biopsy.  In practice, this study is not going to make a radical change
in how doctors deal with prostate cancer.

I suspect that Kolata's article will be typical of how the media handles
this.   The result may be that more men will stop having PSA tests or
decide that they don't need biopsies and when cancer is diagnosed will
opt not to do anything.  This is unfortunate, and I at least will try to
write a letter to the Times correcting the misunderstandings in the news
report once I see what the new study actually showed.   Perhaps other
will follow suit with the Times and other newspapers.
dale.j. - 27 May 2004 15:40 GMT
> I just read Gina Kolata's article in the N Y Times on a new study which
> shows that up to 15 percent of older men with PSA less than 4 ng/ml show
[quoted text clipped - 25 lines]
> report once I see what the new study actually showed.   Perhaps other
> will follow suit with the Times and other newspapers.

Hello Leonard,

I read the article too.  It's in our morning paper today in addition to
all the web news sites.  An article like it was out a few months ago.  
It almost appears to be some kind of a campaign of sorts.  I have my
thoughts about it.

What do you or anybody think the motive is for writing such an article?

Dale

Signature

Email:  dalej2@mac..com

Vernon - 27 May 2004 19:00 GMT
> > I just read Gina Kolata's article in the N Y Times on a new study which
> > shows that up to 15 percent of older men with PSA less than 4 ng/ml show
[quoted text clipped - 36 lines]
>
> Dale

Wake up guys!   This is an important event all for the best.

When my PSA got to 4 my doctor said "let's watch it".   If he/we had been
looking at the PSA velocity numbers we would have been ringing alarm bells,
but the dogma at that time was that 4 is a "good" number, not one for
alarms.

Doctors, especially those that graduated some time ago, do need to be
re-educated and brought abreast of the modern trends in their science(s).
Lots of them still cling to the old dogma, like "men don't get breast
cancer", and that leads to grief.

Anything that sends the guys to do PSA tests, and biopsies, will be in their
best interests if these tests are done after careful rationalization of the
existing data for that person.

Indeed, maybe the best way to treat really early prostate cancer is not RP,
or radiation, but chemotherapy.   Obviously if the disease is detected late,
after much spreading has occurred, then RP or radiation, followed by
chemotherapy might be best.   Don't forget that the surgeons and the
radiation oncologists will beg to differ since this would affect their
earnings.

We still need better tests to detect PCa and better chemotherapy drugs.
The battle is still in the early stages.

Best wishes.

Vernon
dale.j. - 27 May 2004 20:10 GMT
> "dale.j. " <nos.pamz@nospam.com> wrote in message

When my life is on the line I want the best chances and don't want to be
someones test fixture for a new theory.  I'll leave that up to more
adventurous guys.  As far as lowering PSA limits I say good, but that's
not what I got out of the article.

Dale J.

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Email:  dalej2@mac..com

Danny McCarty - 29 May 2004 20:02 GMT
>Subject: Re: Report on new PSA study
>From: "Vernon" openbox@verizon.net
[quoted text clipped - 60 lines]
>Indeed, maybe the best way to treat really early prostate cancer is not RP,
>or radiation, but chemotherapy.  

We must suffer the needle biopsy anyway, why can't they try injecting
chemotherapy agents directly into the prostate?  Might be able to use stronger
stuff, and add traditional administrations for stray wandering cells...

>Obviously if the disease is detected late,
>after much spreading has occurred, then RP or radiation, followed by
[quoted text clipped - 8 lines]
>
>Vernon
Leonard Evens - 27 May 2004 22:03 GMT
>>I just read Gina Kolata's article in the N Y Times on a new study which
>>shows that up to 15 percent of older men with PSA less than 4 ng/ml show
[quoted text clipped - 34 lines]
>
> What do you or anybody think the motive is for writing such an article?

There is a debate going on in the medical community about whether or not
early diagnosis does much good.  Some physicians, mainly
epidemiologists, think that it may not in many cases, and they fear that
many people are treated for cancers which will never amount to anything,
with attendant side effects that could be avoided.   On the other side
are those who treat cancer who feel generally that early detection does
does work.   The trouble is that few studies have been done which are
statistically without fault and which give an answer one way or the
other.   For some cancers, it is generally clear that early detection is
not much use.  For others, it is clear that it saves lives.  But for
some, such as breast cancer and prostate cancer, one can make arguments
both for and against early detection.

Gina Kolata is a very bright science reporter.  (She was actually a math
major ;=))   But she likes to glom onto controversial issues in science,
particularly medicine.   Her past reporting, as I see it, shows a bias
against early detection.  She shows this by her choice of experts and
what she quotes and what she doesn't.   I don't think there is anything
nefarious going on, but it certainly is attractive to a reporter to
question conventional wisdom, and perhaps to some extent she feels she
is doing that.   She is not entirely subjective.  She does present both
sides of the argument.   But as I see it she ignores the complexities
and oversimplifies.   The problem is that you can't generalize about all
cancers or even from one cancer to another.  In addition, for any
specific cancer, whether early detection makes sense or not can be quite
complex, depending on the circumstances.  For example, for prostate
cancer, PSA testing, I think, makes a lot of sense for men 50 (40 in
case of family history or other factors) to 70.  It doesn't usually make
much sense for men over 80.  For men 70-80, it may or may not make
sense.   In addition, any individual man has to decide himself what he
should do after understanding the issues as they apply to him, and he
can't simply go by age.  Kolata, in her reporting ignores all that
complexity.  It makes a better story that way.  I think that is all
there is to it.

> Dale
Dave Perry - 27 May 2004 22:22 GMT
I read the original article - not the newspaper/newscast version.  If
I recall correctly the study followed many men with lower PSAs and at
the end of 7 years did biopsies even though there was no indication of
PCa.  No one should be surprised that cancer was found in many of
these men even some men with PSA values less than 1.0 but I am
surprised that the positive rate was as low as 15%.  Of course since
biopsies don't find all cancers anyway, especially the smaller volume
cancers, the percentage ought to be significantly higher.  It's
interesting that the editor of the mag (I think it was New England
Journal of Medicine) in his editorial regarding the article basically
said "So What?"  It appears to me that men are no better off after the
article than before and what we really need is a better test.
Dave Perry
Alan Meyer - 27 May 2004 16:24 GMT
> I just read Gina Kolata's article in the N Y Times on a new study which
> shows that up to 15 percent of older men with PSA less than 4 ng/ml show
> the existence of prostate cancer on biopsy. ...

There is a summary of the study findings published by the
National Cancer Institute at:
   http://cancer.gov/newscenter/pressreleases/PCPTPSA

   Alan
 
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