Pope Leo XIV had lung surgery on Tuesday afternoon at the Gemelli hospital in Rome, the Vatican said. Surgeons removed the lower lobe of his right lung with a video-assisted technique, which works through small cuts instead of one large opening.

A test of the tissue during the operation confirmed lung adenocarcinoma, a common type of lung cancer. The doctors said this matched what their earlier examinations had suggested. The pope spent about three hours in the operating room, and the operation itself took about 90 minutes. Doctors said it went well and that there were no complications.

Leo woke up normally. After a short time under watch, he went back to his room on the hospital's 10th floor. Later he asked for dinner and spent the evening with his secretaries and other Vatican staff, spokesman Matteo Bruni said.

Leo, who is 71 and the first pope from the United States, announced the planned surgery himself on Sunday, after the Angelus prayer in St. Peter's Square. He said the growth had been found at a very early stage. Further tests will check whether the cancer has spread, the BBC reported.

The Vatican has cleared his public schedule until Oct. 20. A trip to Latin America in early November is still planned. It includes Peru, where he served for years as a missionary and then a bishop.

Cardinal Pietro Parolin, the Vatican's secretary of state, was asked if he was worried. "Am I worried? Yes, because I certainly wasn't expecting anything like this," he told journalists, the BBC reported. He added that the cardinals were struck by the pope's calm.

The Vatican expects to give an update on Wednesday morning about how the pope spent the night and any test results.

What we know: Part of the pope's right lung was removed, the cancer is adenocarcinoma, and the surgery had no complications.
What we don't: Whether the cancer has spread, whether he will need more treatment, or whether his November trip will go ahead.