10/15/2026
The Vatican announced that Pope Leo XIV, 71, has been diagnosed with adenocarcinoma of the lung, a type of non-small cell lung cancer, following surgery Oct. 13 to remove a lung nodule.
Medical oncologist Stephen Liu, MD, a lung cancer expert at Georgetown University’s Lombardi Comprehensive Cancer Center and division chief of hematology/oncology at MedStar Georgetown University Hospital, says this type of cancer is the most common type of lung cancer that carries “the most favorable prognosis.”
Liu, who is not involved in the Pope’s care, said based on details released by the Vatican, it appears the Pope had minimally invasive surgery to remove his right lower lung, known as a lobectomy.
“For now, completion of the surgery without complication and being able to return to the room is a very good sign, and we would expect steady and rapid recovery while we wait for the pathology results, which should take a few days.”
Lung cancer expert Dr. Stephen Liu weighs in on the news of Pope Pope Leo XIV's lung cancer diagnosis today.