Pope Leo XIV will not need additional cancer treatment following surgery to remove a malignant tumor from his right lung, his medical team announced on Wednesday, October 21, 2026. The 71-year-old pontiff is recovering at the Vatican after leaving a Rome hospital four days after his operation. Doctors also see no medical reason to cancel his scheduled November 6–17 visit to South America.
The announcement provided an encouraging update about the pope's health after tests confirmed that his lung cancer had not spread. The cancer was confined to the affected area, allowing surgeons to remove it without requiring further treatment at this stage.
Leo underwent surgery on October 13 at Rome's Agostino Gemelli Polyclinic, where doctors removed the lower lobe of his right lung. The operation confirmed a diagnosis of lung adenocarcinoma, the most common type of lung cancer.
The pope was discharged on October 17 after doctors reviewed his blood tests, chest X-rays and overall condition. He has since resumed public appearances and some official responsibilities while continuing his recovery.
Doctors Confirm Cancer Was Localized
The latest medical assessment represents an important development following several days of uncertainty about whether Leo would require chemotherapy or other cancer treatments.
According to Reuters, final medical tests showed that the cancer had not spread beyond the affected lung tissue. His doctors determined that no additional cancer treatment was necessary following the successful operation.
The original concern began when medical examinations revealed a small nodule in the pope's lung. Leo publicly disclosed the discovery during an appearance at the Vatican before entering the hospital for surgery.
The operation was performed by a medical team that included thoracic surgeon Dr. Stefano Margaritora. Doctors removed the lower portion of the right lung containing the tumor, a procedure intended to eliminate the cancerous tissue.
Following surgery, the medical team closely monitored Leo's breathing, blood tests and general recovery. His condition improved sufficiently for doctors to approve his discharge several days earlier than initially expected.
Before leaving the hospital, Leo celebrated Mass and maintained contact with Vatican officials. His relatively brief hospitalization allowed him to return to the Apostolic Palace while recovering from a significant operation.
Although the cancer findings are encouraging, the removal of part of a lung remains major surgery. The pope must continue recovering physically even though his doctors do not recommend further cancer treatment.
Pope Returns to Public Duties
Leo made his first public appearance after leaving the hospital on Sunday, October 18, when he addressed worshippers gathered in St. Peter's Square.
Speaking from the window of the Apostolic Palace, the pope thanked those who had offered prayers and support during his hospitalization. He indicated that he would resume his responsibilities gradually rather than immediately returning to his usual schedule.
On Wednesday, October 21, Leo appeared in St. Peter's Square for his weekly general audience. He traveled through the crowd in the open-air popemobile, greeting and blessing pilgrims during his first such appearance since the surgery.
The pope also delivered an address lasting approximately 50 minutes and offered greetings in seven languages. His participation demonstrated that he had resumed some of the public responsibilities central to his role as leader of the Roman Catholic Church.
The appearance was closely watched because Leo had undergone surgery only eight days earlier. His medical team has nevertheless emphasized that his recovery is progressing without major complications.
Leo was elected pope in May 2025, becoming the first American-born leader of the Catholic Church. Originally from Chicago, he spent many years serving in Peru and also holds Peruvian citizenship.
His experience in South America gives particular significance to the international journey planned for November. The trip includes countries where the Catholic Church has a substantial presence and where Leo has longstanding personal and religious connections.
South America Visit Remains Scheduled
The Vatican continues preparing for the pope's 12-day journey to Uruguay, Argentina and Peru, scheduled to begin November 6.
The official itinerary calls for Leo to depart Rome and arrive in Montevideo, Uruguay, on the opening day. He is expected to meet government officials, religious leaders and local Catholic communities during the first stage of the visit.
He will then travel to Argentina, with scheduled activities in Buenos Aires and Córdoba. The itinerary includes public Masses, meetings with religious groups and gatherings with young people.
The final portion of the journey will take place in Peru, where Leo spent much of his religious career. Planned destinations include Lima, Chiclayo, Cusco and Pucallpa.
The trip involves numerous flights and public engagements over less than two weeks. Several destinations also present additional physical demands because of travel distances and changes in altitude.
Despite those challenges, Margaritora has indicated that there are no clinical reasons preventing the pope from making the journey. The surgeon's assessment suggests that Leo's recovery has progressed sufficiently for international travel to remain an option.
However, Vatican officials have acknowledged that the schedule might require adjustments. Cardinal Pietro Parolin, the Vatican's secretary of state, has suggested that Leo may need to moderate the pace of his activities while recovering.
Any changes would be intended to reduce physical strain during a demanding international trip. The Vatican has not announced a cancellation or postponement of the visit.
A Significant Test of the Pope's Recovery
The planned journey would be Leo's first major international trip since his lung cancer operation. It would also place him before large public gatherings at a time when he is still recovering from surgery.
Papal visits typically involve long days filled with religious services, speeches, official meetings and travel between locations. Such commitments can be physically demanding even without recent medical treatment.
Leo's recovery therefore remains an important consideration for Vatican planners. Officials must balance the pope's desire to fulfill his commitments with medical recommendations about activity and rest.
The pope's health has attracted particular attention because of the unexpected cancer diagnosis and the speed of his return to public life. Before the operation, he had generally been considered healthy and active, with tennis among his recreational interests.
The Vatican's decision to release information about the diagnosis, surgery and recovery has also provided unusual public detail about a reigning pope's medical condition.
Papal health has historically been a sensitive issue because the pope serves as both the spiritual leader of the Catholic Church and the head of Vatican City State. Serious medical problems can affect religious ceremonies, international diplomacy and the Church's daily administration.
For now, the latest results have reduced concerns about additional cancer treatment. The immediate focus has shifted toward ensuring that Leo continues recovering as he gradually resumes his regular activities.
Vatican Prepares for November Departure
The official travel program remains in place, with the pope scheduled to depart Rome on November 6 and return on November 17.
The itinerary includes meetings with political leaders, visits to Catholic institutions and celebrations attended by thousands of worshippers. The journey would also return Leo to Peru, where his previous pastoral work established strong connections with local communities.
Doctors have not identified a medical reason to prevent the trip, but the Vatican may still modify individual events if his recovery requires a lighter schedule.
The next two weeks will provide an opportunity for officials to assess how Leo handles his increasing workload. His return to regular public appearances offers encouraging evidence of progress, although it does not eliminate the need for continued postoperative care.
The most significant medical development remains the finding that his cancer was localized and successfully removed. With no further cancer treatment currently recommended, preparations are continuing for the pope's November 6 departure.