Vatican Confirms Pope Leo XIV Has Lung Adenocarcinoma After Surgery Removes Lower Lobe

Surgeons removed the lower lobe of Pope Leo XIV's right lung at Rome's Agostino Gemelli University Hospital on October 13, and intraoperative tests confirmed the growth was pulmonary adenocarcinoma, the Vatican said in a medical bulletin released that evening.

The 71-year-old pontiff entered the hospital earlier that day for removal of a nodule discovered during a routine check. He had told crowds in St. Peter's Square on October 11 that doctors found the growth at a very early stage and that it was well-contained. The procedure itself lasted about 90 minutes. The full time in the operating room was roughly three hours. Lead surgeon Stefano Margaritora and the Pope's personal physician Luigi Carbone reported no complications. The pontiff regained consciousness normally and returned to his room on the hospital's tenth floor.

Pulmonary adenocarcinoma accounts for roughly 40 percent of lung cancer cases. It is a form of non-small cell lung cancer that typically grows more slowly than small cell types. The Vatican statement described the removal as radical, meaning the surgical team took the entire lobe to clear the tumor and surrounding tissue. The bulletin made no reference to chemotherapy or further treatment. Early post-operative exams were expected by late October 14.

This is the first major health disclosure of Leo's 17-month papacy. The American-born pontiff, elected in May 2025, has kept a public schedule that included travel and regular Angelus addresses. His agenda is cleared through October 20 to allow recovery. Gemelli has served as the preferred hospital for popes for decades. Previous pontiffs, including John Paul II and Francis, received treatment there.

The nodule was spotted in a recent check-up. Pre-operative tests had already raised suspicion of malignancy, which the frozen-section analysis during surgery confirmed. The team used video-assisted thoracic surgery, a minimally invasive approach that inserts a camera and instruments through small incisions rather than a full open thoracotomy. That technique is standard for early-stage localized tumors when the patient is otherwise fit.

Adenocarcinoma of the lung can occur in people who have never smoked. Risk factors include age, family history, and certain environmental exposures, though the Vatican provided no further medical history. Survival rates for early-stage disease after complete surgical resection range from 80 to 98 percent in published series, according to specialists who commented on the case for other outlets. The Vatican has not released staging details beyond the description of a localized nodule.

Crowds gathered outside Gemelli on October 13. Some shouted best wishes as the Pope arrived. Cardinal Baldassare Reina, vicar general of the Diocese of Rome, led prayers at the hospital. The Holy See has not announced when Leo will resume public appearances or return to the Vatican. The next medical update is expected once the initial post-operative results are ready.

The diagnosis arrives at a moment of continued global attention to the papacy. Leo has positioned himself as a bridge-builder in several recent addresses. His recovery timeline will determine whether planned engagements in late October proceed. The Vatican has not indicated any change in the pontiff's long-term agenda beyond the immediate recovery window.