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Pope Leo, 71, Diagnosed With Lung Cancer After Surgery

THOUGHTS AND PRAYERS

The American pontiff’s surgery to remove a small growth on his lung was successful, but it was confirmed to be cancerous.

Pope Leo XIV leaves the Vatican on October 13, 2026, to be admitted to Rome's Gemelli University Hospital for an operation to remove a lump from his lung.
TIZIANA FABI/Tiziana Fabi, Getty Images

Pope Leo XIV was diagnosed with lung cancer after undergoing successful surgery to remove the lower lobe of his right lung, the Vatican said Tuesday.

The Vatican announced that Pope Leo XIV’s surgery to remove a small lung growth was successful.

Further examination revealed that the lobe was cancerous, Dr. Luigi Carboni and Professor Stefano Margaritora said in a statement. Tests identified pulmonary adenocarcinoma, a common type of lung cancer.

Pope Leo XIV revealed that he is set to undergo surgery to remove a “localized nodule in my lung,” noting that it is at a “very early stage and is well localized" at St. Peter's Square on October 11, 2026, in Vatican City.
Pope Leo XIV revealed that he is set to undergo surgery to remove a “localized nodule in my lung,” noting that it is at a “very early stage and is well localized" at St. Peter's Square on October 11, 2026, in Vatican City. Vatican Pool/Elisabetta Trevisan, Getty Images

The doctors did not disclose the cancer’s stage or how far it had progressed.

“The surgery was completed successfully, within the expected timeframe and as planned, and the Holy Father has returned to his room,” the Vatican posted Tuesday.

“The Holy Father underwent thoracic surgery as scheduled,” said Dr. Luigi Carbone and Professor Stefano Margaritora in a statement after the surgery ended. “To make the procedure more radical, the lower lobe of the right lung was removed using video-assisted surgery.”

Pope Leo XIV greets faithful as he arrives at Gemelli Hospital on October 13, 2026 in Rome, Italy.
Pope Leo XIV greets faithful as he arrives at Gemelli Hospital on October 13, 2026 in Rome, Italy. Vatican Pool/Simone Risoluti, Getty Images

The American pontiff, 71, had arrived in good spirits at the Gemelli Hospital in Rome for his scheduled surgery, greeting staff and shaking hands, video footage from the scene showed.

The Vatican said Leo’s estimated recovery would take a week and canceled all of his audiences through October 20.

Leo announced the planned procedure during his Sunday noon prayer in St. Peter’s Square.

“The doctors believe it is best to intervene, so, following their advice, I have decided to undergo surgery to have it removed,” he told the crowd.

The pope has no previously known health problems. He is not a known smoker, but it is unknown if he smoked in his youth.

“These are things that can be treated very well, if the words he used reflect the clinical situation,” said Dr. Lorenzo Spaggiari, a thoracic surgeon at the European Institute of Oncology who is familiar with the team at Gemelli but is not involved in the pope’s care.

Pope Leo XIV holds a private audience with US Vice President J.D. Vance at the Apostolic Palace on May 19, 2025, in Vatican City.
Pope Leo XIV holds a private audience with US Vice President J.D. Vance at the Apostolic Palace on May 19, 2025, in Vatican City. Vatican Pool/Simone Risoluti, Getty Images

Vice President JD Vance met with Pope Leo XIV at the Vatican in May. The meeting came amid a public spat between the Trump administration and the Chicago-born pontiff who has criticized the war in Iran.

President Donald Trump has called Leo “weak on crime” and “terrible for foreign policy”. Vance, a Catholic, came to Trump’s defense, warning the pope to “be careful” when discussing theology.

Leo has continued to preach his antiwar stance, telling reporters he has “no fear of the Trump administration.”

The pope has a major trip planned for Uruguay, Argentina, and Peru in November. A Vatican spokesperson said those plans have not changed.

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