The Vatican has revealed that Pope Leo XIV has lung cancer — a diagnosis delivered Tuesday evening after surgeons removed part of his right lung in Rome.
In a statement issued late Tuesday, the Holy See Press Office said the operation was “completed successfully, within the expected timeframe and as planned.” Doctors used a video-assisted technique to remove the lower lobe of the pontiff’s right lung. Tissue examined during the procedure showed pulmonary adenocarcinoma, the most common form of lung cancer. The diagnosis matched what preoperative tests had already indicated, the Vatican said.
The surgery took place Tuesday afternoon at the Agostino Gemelli University Policlinic in northwest Rome — the hospital that has treated popes for decades. The statement, signed by the Vatican’s director of health services Dr. Luigi Carbone and chief thoracic surgeon Professor Stefano Margaritora, said the operation itself lasted about 90 minutes. The pope, 71, woke up normally and, after a brief period of observation, returned to his room on the hospital’s 10th floor — the suite once nicknamed “Vatican three” by John Paul II.
It was the pope himself who told the world the operation was coming. Speaking to the crowd gathered in St. Peter’s Square after the Angelus on Sunday, Leo said doctors had found a small nodule on his lung during a routine checkup. It had been spotted “at a very early stage” and was “well-contained,” he told the faithful. “The doctors consider it appropriate to intervene and so, following their advice, I decided to have surgery to remove it. I thank you for your spiritual closeness and I rely on your prayer.”
On Tuesday, well-wishers gathered outside the Gemelli as the pontiff’s convoy arrived. Leo waved from a black SUV and shook hands with hospital officials before heading inside through the main entrance. Some in the crowd shouted “Auguri” — best wishes.
The Vatican said the pope is expected to spend about a week in the hospital recovering. All of his public audiences have been cancelled through October 20. It is the first hospital stay of his pontificate: Leo, the American-born cardinal Robert Prevost, was elected by the world’s cardinals in May 2025, seventeen months ago, and until now had no known health problems. He is known for an active lifestyle — tennis is his game — and is not known to be a smoker.
Why this matters. For the world’s 1.4 billion Catholics, the health of the pontiff is not a private medical matter but a global event. Unlike a head of state, the pope has no deputy who formally steps in when he falls ill; the entire weight of the Church’s leadership rests on one aging body. A cancer diagnosis at 71, even caught early, raises immediate questions the Vatican has not yet answered: what treatment comes next, and whether Leo can keep his schedule — including an 11-day tour of Uruguay, Argentina and Peru set to begin November 6.
The medical details that are public are, on their face, encouraging. Lung adenocarcinoma is the most common type of non-small-cell lung cancer, and a nodule found at a routine checkup, removed cleanly in 90 minutes with no complications, is the best version of this story. Fewer than 5 percent of lung nodules turn out to be cancerous at all, according to the American Thoracic Society. The question now is what the tissue told the doctors beyond the diagnosis — and the Vatican, so far, has said only that the pope woke normally and is back in his room.
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