[FullMtlAlcoholc]

I'm not a doctor, but I believe cancer is what we call it when cells that evade apoptosis proliferate to reach a critical mass. They metasttisize when they are able to survive a journey through the blood or lymph systems to invade other foreign tissues for food.

I don't believe it's necessarily due to entropy but the process by which cellular division takes place involves a copying of the host cell's DNA and that copying process is not 100% perfect. It is remarkalably accurate, but given enough time, even with all the systems in place to mitigate and repair errors, they will occur. Most will simply cause that mutated cell to die but it's similar to the 100 monkeys on 100 typewriters at scale. Eventually an error will occur that makes a cell immune from apoptosis.