Pope Leo XIV underwent surgery in Rome on Tuesday to remove the lower lobe of his right lung after doctors confirmed he had lung adenocarcinoma, the Vatican said. The operation at Agostino Gemelli Polyclinic lasted about 90 minutes. Tissue examined after surgery confirmed an earlier test result, according to a statement from the pope’s doctors released by the Vatican. They described the surgery as successful and said Leo woke normally, spent a short time under observation and then returned to his room on the hospital’s 10th floor. Lung adenocarcinoma is the most common type of lung cancer in the United States, accounting for about 40% of cases, according to the Lung Cancer Foundation of America. The Vatican has not announced whether Leo will need further treatment. The 71-year-old pontiff has largely cleared his public schedule for several days, through at least Oct. 20. Leo is physically active, with regular workouts and tennis matches, and has been known to ride horses at Castel Gandolfo, the papal retreat. The Vatican also said Tuesday that Leo’s older brother, Louis, who lives in Florida, is hospitalized with a form of cancer. Their mother, Mildred, died of cancer in 1990 at age 77.