Scientists find ancient case of human cancer in man who died 4,500 years ago

I'm surprised that some people feel cancer is exclusively a modern phenomenon. I wonder how (if) it would be possible to discover in ancient animals.

“This is one of — if not the oldest — absolute cases of cancer that we can be really, really confident saying that it’s cancer,” said Angela Lieverse, a bioarchaeologist at the University of Saskatchewan in Saskatoon.