Pope Leo’s lung cancer diagnosis has caused millions around the world to worry and wonder about the 71 year old’s health. Officially called pulmonary adenocarcinoma, his disease is one of the most common forms of lung cancer. On this episode of The Takeaway with Alex, Dr. Kalvin Lung of Northwestern Medicine explains the surgical procedure the pope underwent, the type of cancer he faces and the prognosis ahead for the leader of the Catholic Church. Dr. Lung told NBC Chicago’s Alex Maragos that he has performed the same surgery that the pope had hundreds of times. He also described the advances in medicine and treatment over the last decade that greatly improve outcomes for patients facing this type of cancer.