By Karlie Pouliot | Fox News
Steve Jobs, co-founder and CEO of Apple, announced he was taking another medical leave of absence Monday, leading to new speculation about what could be wrong with his health.
No further information about his condition was provided, but this is not the first time Jobs, 55, has taken a medical leave of absence.
In 2004, he took time off to recover from surgery to treat a very rare form of pancreatic cancer — called an islet cell neuroendocrine tumor. In 2009, he took a six-month medical leave from January to June to have a liver transplant.
About 85 to 90 percent of people who have liver transplants will be alive one year later, and about 75 to 85 percent of people will survive at least five years after a transplant, the United Network for Organ Sharing (UNOS) said on its website.
Dr. Alan Benveisty, director of transplant surgery at St. Luke’s Roosevelt Hospital in New York City, said there is a laundry list of reasons as to why Jobs could be taking a medical leave just two years after his transplant, including: