DR. MOUL: For
the urologists, radiation oncologists, and the medical oncologists
in the audience, I would just like to ask with a show of hands,
how many of you have treated at least one patient with testicular
tumor in the last year, just as a denominator? Just a show of
hands. So obviously, the vast majority of the audience.
Now, let me focus that
and just ask, how many of you have recommended surveillance for
at least one seminoma patient in the last 12 months? It looks
to be about 40 percent, I would say, 30-40 percent.
And then how many have
recommended surveillance for at least one non-seminoma germ cell
patient in the last year? It looks to be again probably 60-70
percent.
Mary, do you want to
just make a comment on that? What was your take on that response
from our group?
DR. GOSPODAROWICZ:
It is apparent in other disease sites too that it takes about
ten years to change clinical practice. Physicians are not really
keen to change well entrenched practice. Radiotherapy for stage
1 seminoma has been the classical treatment. The results are excellent.
The morbidity is low. And there is this inherent belief that it
is safe, and there is no need to watch patients.
There is a great deal
of worry that patients will get lost to follow-up, and then recur
with some bulky disease and die of disease. So there is a lack
of trust between almost the contract that needs to be made between
physician and the patient, that the patient on surveillance will
be compliant.
There are barriers
to adoption of seminoma surveillance, but we have observed that
it's been adopted in Canada now. In a population-based study of
radiation oncologists who participate in RTOG, about a third never
offer seminoma surveillance to their patients. So it's still out
there.
There is a new treatment
coming in, which is adjuvant carboplatin. It may be that this
will take over, because it's so easy to do.
DR. MOUL: Let's just
ask a follow-up question. How many in the audience who raised
your hands for any of those questions have actually treated a
patient with primary carboplatin in the last year? So again, it
hasn't caught on.
PARTICIPANT: Just one
question for Mary. The data you showed on secondary malignancies
following radiation therapy, was I mistaken, but some of those
patients had gotten much higher doses of radiation therapy to
the retroperitoneum for treatment of non-seminoma tumors. What
that not correct?
DR. GOSPODAROWICZ:
That is correct. So the overall risk is low, but it is there.
DR. MOUL: I would like
to ask again, related to Dr. Bartsch's talk, for the urologic
surgeons in the audience, how many have performed any RPLMBs in
the last 12 months? Okay, so a large percentage.
How many have performed
a laparoscopic RPLND in the last 12 months? So again, it looks
like I would estimate 10 percent.
And maybe I could just
ask Dr. Bartsch, and I guess I'll personalize this, one of the
challenges for example we face in the military is we see quite
a few testicular tumors, yet it has been a challenge. We have
many young guys who are out of their training, either military
or civilian. They want to do cases.
They are seeing some,
but they are not to the point where they can probably have the
competence to do a laparoscopic when they get out at some of these
smaller hospitals.
Of course your approach
is they all come back to the referral center. Do you want to just
comment on that?
DR. BARTSCH: Well,
actually, our way to do laparoscopic surgery is not going out
of endourology. Our way of laparoscopic surgery is laparoscopic
surgery is a part of surgery in oncology, in reconstructive surgery,
and pediatric hematology. So it's quite different.
And for three years
we have the residents working in laparoscopic surgery. So it's
not the specialty in our department of urology. If you go back,
transurethral prostatectomy was the first laparoscopic approach
ever in medicine. This is not a specialty of its own, so I think
we have just to train residents, and we should not make a specialty
out of laparoscopic surgery.
DR. MOUL: Is there
anybody in the audience from Indiana University, by any chance?
In fact, we talked to them recently. We called them about a case.
Many times we will bounce ideas. I know that at that institution,
they are still holding fast to the open RPLND for stage 1.
DR. BARTSCH: But if
you have a patient, you can send them to the Mayo Clinic. There
is somebody who is doing now laparoscopic retroperitoneal lymph
node dissections.
DR. MOUL: Yes, sir?
PARTICIPANT: This is
a question for Dr. Bartsch. When you do RPLND, and if the lymph
node is negative, do you still give them chemotherapy, or do you
give chemotherapy only to 2A patients?
DR. BARTSCH: Well,
we have been very anxious when we started this project. Up until
March 2000, when we had a 2A, we give two cycles of chemotherapy.
Therefore, we cannot evaluate those patients for oncologic efficacy.
Since March 2000, we
are just doing a bilateral lymph node dissection, nerve sparing.
And as you have seen, we have just started doing this in 2C lesions,
doing nerve sparing, and we have 75 percent of those patients
preservation of the nerves. So it's much better than in the open
approach.
PARTICIPANT: So the
oncological results you presented today are patients who, if the
nodes were negative, you did not give them any chemotherapy?
DR. BARTSCH: No, nothing.
Our philosophy is to spare chemotherapy.
DR. MOUL: And we're
almost out of time, but I want to ask one question to the audience
regarding Dr. Greene's talk. For the clinicians in the audience
who care for patients with testicular cancer, how many of you
all have cared for a patient who you believe has familial testis
cancer in the last year? So it's looks like about maybe 10 or
15 percent.
Maybe if I could ask,
what is the limitation? How far out from treatment can they be?
Any time?
DR. GREENE: That's
one of the nice things about the sort of etiologic studies we
do. And particularly in a disease like testis, where the survival
rate is so good, that there is no time limit on when these men
may have been diagnosed.
We do require that
there be either two living family members with disease, or if
the family members with testicular cancer are deceased, that their
spouse and children be willing to participate in the study. From
a genetic point of view, we can infer the genotype of the deceased
individual if we have information on the spouse and the children.
But my expectation
is the majority of the families that we see, the testis cancer
cases will have been previously treated up to years in the past,
and that's not a problem for us.
DR. MOUL: So for example,
we could go to the DOD active tumor registry and pull out the
testicular cancer patients, and look for family history, and send
them to you all for 20 years?
DR. GREENE: Nothing
would make me happier. In fact, on the list of referral sources
is the testicular cancer case control study that Kathryn McGlin
in our division is doing. This is based in the Department of Defense,
and is accruing about 1,100 newly diagnosed cases, and a similar
number of controls. That study has built into it, a mechanism
to refer families that are identified to us for consideration
for our study.
DR. MOUL: Great.
One final question.
Yes, sir?
PARTICIPANT: I have
a question about the post-chemotherapy laparoscopic node dissections.
What is the range of the tumor sizes that you have been able to
do laparoscopically?
DR. BARTSCH: Well,
actually we are doing 2C lesions. This can be about 7-10 centimeters.
This is no problem. Therefore, for instance we are also doing
positive nodes with radical nephrectomy without difficulty. And
it's better, because you see better.
PARTICIPANT: I agree
that you see better.
DR. BARTSCH: What we
don't do is if you have a CT scan showing that the order and the
vena cava is totally overgrown by tumor. This is not the case.
And we are not going into seminoma.
PARTICIPANT: If you
have a tumor that is interaortocaval and paracaval, would you
have to flip the patient over, and immobilize the colon to the
other side?
DR. BARTSCH: That's
right. You just go with the trocar to the other side, and flip
the table over.
DR. MOUL: One final
comment from Dr. Greene.
DR. GREENE: For those
of you who aren't familiar with how the intramural clinical research
program at NCI works, I would mention that one of the advantages
of folks joining our project is that NCI foots the bill for these
people to come to Bethesda for study.
Their care here is
free. We bring them and their families. We usually try and tie
it so that come in on a Monday, and they can be here over the
weekend, and enjoy themselves in Washington. So the burden of
participating is their time and the travel, but the cost is on
us.
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