Pope Leo XIV has lung cancer, the Vatican confirmed Tuesday, after surgeons at Rome's Gemelli hospital removed the lower lobe of his right lung in a procedure officials called a complete success.

The 71-year-old pontiff first disclosed the health scare on Sunday, telling pilgrims gathered for his weekly blessing in St. Peter's Square that doctors had found a "circumscribed," early-stage nodule during routine medical exams. He did not say at the time whether it was malignant. A post-surgical medical bulletin released by the Vatican on Tuesday settled the question: tests confirmed lung adenocarcinoma, though doctors said the tumor was caught early and fully excised.

A quick, decisive operation

Leo was driven from the Vatican to Gemelli — the same hospital where Pope Francis was repeatedly treated in his final years — early Tuesday for the operation, which the Vatican said proceeded "without complications." Recovery is expected to take about a week, and the Holy See has canceled all public audiences through October 20.

HIS PROGNOSIS IS EXCELLENT, SINCE IT WILL HAVE BEEN REMOVED AT AN EARLY STAGE

That assessment, offered by an outside lung-cancer specialist cited by the Associated Press ahead of the surgery, tracked with the Vatican's own messaging: officials have repeatedly stressed that the nodule was small and well-localized, giving doctors a strong shot at a clean removal before any spread.

Leo, elected pope in 2025 as the first American to hold the office, has otherwise kept a demanding travel schedule since taking over the Chair of St. Peter. It remains unclear whether his recovery will affect a major foreign trip planned for November 6-17, which would take him to Uruguay, Argentina and Peru — a swing through the pope's adopted continent, where he spent decades as a missionary and bishop before his election.

Word of the diagnosis rippled quickly through Catholic communities worldwide, with bishops' conferences from Manila to Mexico City issuing statements calling for prayers. The Vatican press office said the pope was "in good spirits" following the operation and had already been in brief contact with his closest aides.

A health scare with precedent

The Vatican has weathered papal health crises before, most recently with Pope Francis, who was hospitalized multiple times at Gemelli in his final years for respiratory infections and underwent abdominal surgery there in 2023. Those episodes fueled years of speculation about succession and the mechanics of a possible resignation, and Tuesday's diagnosis is likely to revive some of that chatter in Vatican-watching circles, even as officials stress that Leo's case appears far less severe.

Lung cancer specialists not involved in the pope's care told reporters that early-stage adenocarcinomas caught and surgically removed before spreading carry a markedly better long-term survival outlook than cancers discovered later, particularly in otherwise healthy patients. Vatican officials have leaned on that framing in their public statements, emphasizing the nodule's small size and the fact that it had not spread beyond the lung at the time of detection.

Leo's election in 2025 was itself a historic moment for the Catholic Church, breaking a long-standing taboo against an American pontiff. Since then, he has pushed an agenda focused on migration, economic inequality and outreach to Latin America, where he spent much of his career before rising through the Vatican hierarchy. The canceled audiences through October 20 and the still-uncertain status of his South American trip underscore how directly the diagnosis could reshape his public schedule in the weeks ahead.

What's next

Doctors will monitor Leo closely in the coming days for any signs of complications, with a fuller update on his condition and any need for follow-up treatment, such as chemotherapy, expected once pathology results are fully reviewed. For now, the Vatican says the focus is rest, with the pontiff's full calendar — including the Uruguay-Argentina-Peru trip — to be reassessed once he's cleared by his medical team.