Even though Pope Leo XIV is recovering well from lung cancer surgery and is going ahead with a big trip to Latin America next week, the diagnosis is “a bit of a game-changer” for the Vatican and Leo’s still-young papacy, a top Vatican official said Tuesday.

Archbishop Paul Richard Gallagher, the Holy See’s foreign minister, said there had been a temptation to think that Leo was a “Superman, a Superpope” after he was elected in 2025 and “hit the ground running” following the drawn-out illness and death of Pope Francis .

“The fact that he has fallen ill with, in many ways, one of the most common illnesses of our age means that he is a poor mortal like the rest of us.…