I think that the body does what it needs to do and prioritises according to these needs.
What you deem to be important or logical, is what is ordained as important by authorities - medical etc. ie not the same as the body's list of priorities.
The body simply doesnt work like that and has its own evolved agenda.
If there is no change then that is good in that there is no increase in toxicity.
Other things will certainly be going on at a level that likely we can not percieve.
Some of us, myself included have a build up of toxins that need to be cleared first before any physical changes can take place.
I would judge that I need to fast myself many times for many years to clear and repair correctly and adjust my western lifestyle habits to suit healthy living.
Another thought that occurs re: S Jobs was that despite his efforts his tumour increased in size.
This would indicate that he continued to lead an unhealthy lifestyle and/or had such toxic buildup in his body that it continued to add to the tumerous growth.
Re: metastasis - I dont believe the popular defiiniton.
It seems that the shedding of cells is a way of slowly releaseing the toxins to be ejected from the body and/or that the toxic load is so great that to maintain the organsim it spreads this toxic load.
It is not a disease that actively spreads and infects - they are our own cells - the body does not turn on itself. (We do that with continual ingestion of toxins :))
Either way - my view of the modern medical profession and all related branched remains intact and deeply tarnished! They can fix bones and perfom emergency surgery but beyond that they are of little use.
Non-intrusive diagnostics can also sometimes be of use.
Being told that you have cancer must also be an intense psychological burden esp with the hype & sensationalism around this subject that orientates the mind to percieve it in what can only be deleterious to health and consciousness.
But, this is the way society has been evolved so we have to cut through the crap to glean whatever truth we can.