Before stepping down as CEO of Apple in August, Steve Jobs said little about his struggle with pancreatic cancer. But seven years ago, he claimed he was cured after surgery removed a large chunk of a rare pancreatic tumor. "This is a kind of tumor that may have given him early warning signs," said Curtis Miyamoto, chair of radiation oncology at Temple's School of Medicine. But, he adds, this is not usually the case for most people with pancreatic cancer: "The pancreas is located deep in the body, so it has to grow to a fairly large size before it gives us any symptoms."