Pope Leo XIV has arrived at a hospital in Rome to undergo surgery on his lung this afternoon. The 71-year-old pontiff waved to hundreds of well-wishers upon arrival. He announced on Sunday the discovery of a nodule on one of his lungs during a medical check-up, which will now be removed. Doctors are optimistic, even if the nodule proves to be malignant, due to its early detection. Pope Leo XIV is admitted to the Gemelli Hospital, a frequent care location for popes. The Vatican estimates a one-week hospital stay, clearing his schedule through next Tuesday, with hopes for his planned trip to South America next month to remain on track.