Pope Francis, 84, was to undergo surgery Sunday in Rome for an inflamed large colon, a Vatican statement said.

The pontiff was admitted to the Gemelli University Hospital “for a scheduled surgery for symptomatic diverticular stenosis of the colon,” it said.

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The condition causes potentially painful inflammation of the diverticulum, a pocket that can form on the colon walls and which tend to multiply with age.

A potential complication is an abnormal narrowing of the colon.

A health bulletin was to be issued once the operation had been completed.

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Born on December 17, 1936 in Argentina, Francis lost part of his right lung at the age of 21. He also suffers from a hip problem and sciatica.

The Pope announced earlier Sunday that he will visit Slovakia in September after a brief stop in Hungary to celebrate a mass in Budapest.

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Francis’ visit to Slovakia will include the cities of Bratislava, Presov, Kosice and Sastin, the Vatican said in a statement.

Although more detailed plans for the trip will be announced later, there was no sign the pope intends to meet Hungary’s political leaders during his stop in Budapest.