Gary, I studied in Canada for 5 years from 1989 to 1993. I studied with Professor Griffith Pearson (who recently passed away August 10, 2016) and Professor Joel Cooper. Two prominent figures in the medical world (you probably have heard of its pioneering on lung transplantation). Recently, in 2013, I returned to Toronto at the invitation of Dr. Shaf Keshavjee, current Head of the Thoracic Surgery Department, at the now called University Health Network. Gary, I told all this to contextualize a bit, because at that time the health system was not clotted as it is today. Medicine was a wonderfully good profession in all respects. But that was 27 years ago, two generations ago. I am well aware that the current situation is different, a little chaotic, selfish and disposable, a monetized health care system (in Brazil is even worse) more demanding with the doctor, I would say even cruel, because of the excesse of work, almost without interruption. In these conditions, many leading brains are burned out by the system, diluted in midst of the mediocres...
About Semiology and Propedeutics, the study of signs and symptoms of diseases, a basilar and fundamental aspect of medicine, a question was made elsewhere and a student answered:
Which textbooks are currently used for Semiology at the top Med Schools like Harvard, Hopkins and UCSD? The answer: As a med student: yea, no, we don't do that. Med school is about risk factors for disease, what beta blocker you can give a tachycardic person with COPD that won't kill them, working the differential for a high anion-gap metabolic acidosis, things like that. Not much room for philosophy, aside from clinically oriented ethics.
But Carl Jung in the past stated: "Know all the theories, master all the techniques, but as you touch a human soul be just another human soul."
Regarding the treatment of cancer. As I said before, it is difficult to make a decision in an extremely complex matter. Google the National Cancer Institute of the USA, regarding the International Classification of this disease. All likelihood, of living depends on at what point in the disease stage the individual is. Supporting treatments like chemo and radio are related procedures used in cases of very poor prognosis, as previously known, when staged by successive lab tests. Generalizing a bit, doctors are the worst patients, because they know what they have, although in many cases occurs a massive escape from reality.