[ RadSafe ] Cancer

[JPreisig at aol.com]

Radsafe,
 
      I guess in cancer production, the carcinogen  is in some volume 
within the body, and this volume can grow if the carcinogen  continues to be 
introduced into the body.  The cancer is probably in the  vicinity of this 
carcinogen volume.  One question I might ask is that once  the cancer grows 
outside of the carcinogen volume, will the cells (upon cellular  division) 
continue to be cancerous?  I expect bodily circulation and other  processes could 
also cause the carcinogen volume to diminish in size.   Quite a dynamic 
process....
 
     I guess cancer production via radiation is a whole  different process, 
mostly a scattering process of the various forms of radiation  by cells, 
DNA and so on.  Any new science on single strand breaks, double  strand breaks 
etc. in the literature lately???
 
    Maybe someone (a young person) could start to use MCNP,  MCNPX or some 
similar computer code, to model computationally (on a  supercomputer these 
days) the scattering of radiation from DNA strands, whole  human cells, 
groups of cells, various human tissues and so on.   Computationally setting up 
the first DNA strand or human cell would be pretty  daunting.  The repeated 
structures capability of MCNP might be  helpful.   Doing some studies 
computationally may allow us to avoid  doing all the studies via lab experiments on 
various animals.  I guess  animal studies would still be required for 
important intellectual steps...
 
    Has it ever been observed that a cancerous human cell  has reverted to 
a non-cancerous state????
 
    Have a good week.     Regards,    Joseph R. Preisig