Just for the record ALL cancers are smart (not just H&N)- smart enough to hijack healthy cells, seek out blood supplies, metastasize and defeat our immune system. Sometimes it actually seems to "feed" on radiation and chemo and everything else thrown at it. It is an highly adaptive and formidable foe. If "poorly differentiated" it will cross over into lymph, bone, muscle and soft tissue. It accounts for roughly 50% of the total death rate. It has baffled researchers for centuries and continues to do so. We have made progress for sure and the number of cancer survivors steadily increases. There is always reason for hope. 200 years ago there was practically no hope.

Consider this when you are deciding what weapons in the treatment arsenal you are going to employ. There is no easy way out and in the words of Bill W. "half measures avail us nothing".