Francis had been due to visit the Gemelli hospital and celebrate a Mass there Friday afternoon. But nearly an hour after he was due to arrive, the Vatican issued a statement saying he was cancelling the trip due to an "unexpected indisposition."
The pontiff has only one full lung. Earlier this month, he skipped two days of audiences due to a stomach bug, then decided not to walk a mile-long procession last week to rest up for a trip to southern Italy.
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