Tumors are also, sadly, the less scary subcase of cancer. Single tumors can be targeted, shrunk, and often taken out. It's the undetectable "lucky" cells that m

Tumors are also, sadly, the less scary subcase of cancer. Single tumors can be targeted, shrunk, and often taken out. It's the undetectable "lucky" cells that might survive chemo and radiation that make the disease so hard to fight (because, as with antibiotic resistance, they've now been selected for resistance to the drugs/radiation).