The Vatican disclosed on 13 October that Pope Leo XIV, 71, has been diagnosed with adenocarcinoma a form of non-small cell lung cancer. The diagnosis followed a scheduled thoracic operation at Rome’s Gemelli Hospital, where surgeons removed a portion of his right lung after discovering a small, localized nodule during routine imaging. The pope returned to his hospital room after the procedure, and a Vatican spokesperson confirmed that the cancer was identified in the removed tissue.
According to the Holy See, the surgery was performed by Dr. Stefano Margaritora, the chief thoracic surgeon at Gemelli, and lasted roughly ninety minutes within a three-hour operating window. The medical team recited the rosary before beginning, underscoring the blending of faith and medicine in the papal setting. While Pope Leo had never been a smoker, experts note that adenocarcinoma can affect both smokers and nonsmokers, representing the most common subtype of lung cancer worldwide.
Medical details and prognosis
Northwestern thoracic surgeon Dr. Justin Karush explained that the mass observed on the pre-operative scan was “highly suspicious” for malignancy, which is why the decision was made to proceed directly to resection rather than a biopsy. In early-stage disease, removal of the affected lung lobe can be curative, often eliminating the need for chemotherapy or radiation. Dr. Ankit Bharat, chief of thoracic surgery at Northwestern Medicine, added that if only a segment or wedge of tissue is taken, the impact on pulmonary function is modest; however, removal of an entire lobe can reduce lung capacity by up to 25 percent, a factor the pope’s age may influence.
Pathology results are still pending, but the Vatican confirmed that the cancer was discovered at an “early stage,” which significantly improves the odds of a full recovery. Additional testing of the excised tissue and nearby lymph nodes will determine whether the disease has spread beyond the primary site. Should further treatment be required, the medical team can tailor options to the pope’s schedule, potentially avoiding invasive therapies if the cancer remains confined.
Global reaction and papal itinerary
Faith leaders worldwide responded immediately. Archbishop Ronald Hicks of New York expressed gratitude for the successful operation and urged the faithful to keep the pope in prayer. In Chicago, the Catholic Extension Society organized a city-wide vigil, emphasizing that Pope Leo is both a spiritual leader and a fellow Chicagoan. Many lay Catholics described the news as deeply personal, likening the pope’s health to that of a brother or close family member.
The Vatican cancelled all papal audiences through 20 October and placed the upcoming Latin-American pilgrimage—scheduled for 6–17 November and covering Uruguay, Argentina, and Peru—under review. Cardinal Tsutomu Kikuchi of Tokyo reported that the pope felt fine after surgery and chose to act quickly to avoid disrupting his travel plans. Nevertheless, the intensity of the itinerary, which includes high-altitude flights and helicopter rides, may be reassessed once the final pathology and recovery timeline are known.
While the pope recuperates in his temporary hospital room—his usual papal suite is under renovation—pilgrims gathered in St. Peter’s Square expressing both disappointment at the cancelled audience and confidence in the pope’s resilience. The blend of medical transparency and spiritual solidarity marks a rare moment of openness in the history of a pontificate that, at 17 months, has already faced a major health challenge.
