"Why does cancer relapse? From one perspective, the answer has to do as much with language, or psychology, as with biology. Diabetes and heart failure, both chronic illnesses whose acuity can also wax and wane, are rarely described in terms of “relapse.” Yet when a cancer disappears on a CT scan or becomes otherwise undetectable, we genuinely begin to believe that the disappearance is real, or even permanent, even though statistical reasoning might suggest the opposite. A resurrection implies a previous burial. Cancer’s “relapse” thus implies a belief that the disease was once truly dead."
From a very interesting NYT article on cancer research.
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