Pope Leo undergoes surgery to remove lung cancer tumor

Doctors removed part of Pope Leo XIV's right lung on Tuesday after tests found cancer there. The surgery took out one lobe of the lung. Tissue analysis confirmed the cancer is adenocarcinoma, a type that is common in the lungs. The Vatican said the operation went well and there were no complications. The pope slept peacefully that night. Doctors do not yet know if the cancer has spread, because further tissue tests are still needed. Those results will decide what treatment, if any, comes next. The pope did not appear at a planned Mass at St. Peter's Square on Wednesday. Early detection like this is important, as lung cancer that is caught early is often easier to treat.