EXPLAINER: What kind of surgery did Pope Francis have?

Pope Francis has had surgery to remove part of his left colon in what the Vatican has described as a planned procedure. Doctors say the bowel problems that the 84-year-old pope was experiencing are very common in older people, although only about 10% to 20% of people with similar problems require surgery. Here’s a look at what we know about the operation and what the pope’s doctors will be watching out for:

WHAT KIND OF SURGERY DID THE POPE HAVE?

According to the Vatican, Pope Francis had the left part of his bowel removed in a three-hour operation Sunday at a Rome hospital. Officials said it was required because the pope’s bowel had narrowed.

Dr. Manish Chand, an associate professor of surgery at University College London who specializes in colorectal surgery, said the pope had likely been experiencing painful symptoms long before the bowel procedure. He was not involved in the pope’s care.

Although minor symptoms can be treated with antibiotics, Chand said in some older people, the pain becomes so severe that removing part of the colon is the only way to fix it.

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