Pontiff is recovering from a lobectomy, which is standard treatment for lung cancer caught early and can be curative

On Tuesday, surgeons in Rome removed the lower part of Pope Leo’s right lung, after a routine health check found a small growth that tests have since confirmed as lung cancer. The operation, called a lobectomy, is the standard treatment for lung cancer caught early, and for many patients it is the only treatment they will ever need. So what exactly did his doctors do, and what happens next?