[ RadSafe ] Breast Cancer
sergio at bgu.ac.il
Sat Oct 6 04:04:56 CDT 2012
I appreciate very much your almost routine comments on many subjects.It's like philosophical digressions!
Concerning your comments on breast cancer I must point out:
1-As a past (retired medical radiation physicist) I can tell you that we don't treat breast cancer with GammaKnife ( reserved only for radiosurgery).We do treat with linacs.
2-Breast cancer is a systemic disease and even if you perform the best combined treatment-Chemo +radiotherapy, you cannot assure 100% that metaatasis will not appear 20 years later.
3-Mapping of all the properties of DNA is an enormous project, and even if you can perform a complete individual mapping, and you could say that a specific women will get breast cancer, you are faced with a difficult question: treat the tumor before it has appeared? Make preventive mastectomy?
Sergio Faermann ,Ph.D.
System Advanced Laboratories
----- Original Message -----
From: JPreisig at aol.com
Date: Saturday, October 6, 2012 5:43
Subject: [ RadSafe ] Breast Cancer
To: radsafe at health.phys.iit.edu
> Dear Radsafe:
> Hey All.
> The US Government and other agencies
> and companies have made
> considerable progress in
> DNA Mapping. Considerable DNA progress has also been made
> by one
> gentleman and his
> company in Southern California --- his name and company were
> described on
> an episode of
> 60 Minutes (USA TV). I guess the many DNA on/off
> switches can detail the
> characteristics of
> various body organs, tissues and structures. Color,
> chemical composition,
> organ geometry and
> dimensions, function(s) and so on, are probably described by
> DNA. One
> might venture a guess
> as to how many parameters are (minimally) needed to describe a
> given organ,
> tissue, structure.
> I wonder, as I have done before on
> radsafe, if cancer parameters are
> in included in the DNA
> information. Rate of growth, characteristics of the cancer
> and so on.
> Perhaps individual
> hospitals and/or research organizations should be given some
> for doing the
> continued DNA mapping for any given organ, tissue, structure.
> I don't pretend to understand biochemistry ---
> I will leave that to
> people educated in that field.
> I have some background in physics, health physics, fluid
> mechanics and
> radiation biophysics and
> radiation chemistry.
> Someday soon, or perhaps already, some smart
> graduate student will
> produce a fluid flow input/
> output model for the human breast. Once produced, such a
> model could be
> tinkered with to
> produce a model in which blood vessel breaks, breaks in other
> systems and so on
> can be produced.
> Breasts have their own life cycle
> from: non-existence, to growth, to
> adult stage, to older
> adult stage and finally, death. This is a dynamic
> process. There is, for
> various cancers, the concept of
> latency time, which can be quite long-winded.
> I expect that once the breasts are exposed to
> some carcinogen,
> radiation???, biological agent,
> other insult, there is a buildup process of the carcinogen in
> the breasts.
> Accumulation of the
> carcinogen may take some time, which is probably goes hand-in-
> hand with the
> phenomenon of
> latency time. Effects of the carcinogen etc. on the breast
> tissue is
> probably somewhat dependent
> on the amount/concentration of the carcinogen available.
> Persons with cancer-susceptible breasts may
> have weak blood and/or
> other fluid circulation
> systems. Maybe this is due to bad genetics, long term
> exposure of a group of
> persons to carcinogens, reproductive behavior of a limited group
> of people
> (a small village) and
> so on. People living in volcanic areas may be exposed to
> more chemicals
> than people living
> on just farm dirt or whatever. In California, there are
> known zones of
> Selenium buildup, just as a
> chemical example.
> A previous post by me alludes to a news item
> on google about discovery
> of 4 distinct types of
> breast cancer. Designer treatment is starting now of
> biopsy samples of
> Cancer grown in Petri
> dishes or whatever.
> More traditional means of treatment include radical
> lumpectomies, gamma knife
> treatment, other radiation treatment, chemotherapy and so
> on. I'm hearing
> than chemotherapy
> is now an easier process. Quite a while ago now, one of my
> health physics
> colleagues remarked that
> she would rather die than go through chemotherapy again. I
> wish her well.
> I hear lately that Pancreatic Cancer is being
> treated with much
> greater success nowadays.
> I also see advertisements in the newspaper about proton machines
> accelerators) being used
> to treat prostate cancer.
> Well, this is getting long. I wish
> great success to anyone doing
> cancer research as their
> real job.
> I guess, if Cancer and Heart Disease are
> truly being conquered then
> people will live longer
> lives and possibly die of natural causes, circulation clogging,
> failure and so on. Soon,
> organs/tissues will be easily grown in Petri dishes and/or other
> Keep moving forward....
> Regards, Joseph R. (Joe) Preisig, PhD
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