European Security — 2026-10-18

Pope Leo Diagnosed With Lung Cancer, Undergoes Surgery as Papacy Future Uncertain

BLUFPope Leo XIV's uncomplicated surgical recovery and Peru's continued preparations make it unlikely the Vatican cancels or postpones any leg of his November trip by November 5, though pending lymph node pathology remains the key variable.

The Vatican said in a medical bulletin on Tuesday, October 13, that surgeons at Gemelli Hospital removed the lower lobe of Pope Leo XIV's right lung using a video-assisted technique, and that intraoperative histology confirmed lung adenocarcinoma 12. Doctors reported no complications, and Vatican News said the Holy See Press Office described a calm night afterward 2. CNN reported that Wednesday blood tests and a chest X-ray were within normal limits, that the pope was walking and eating, and that a Vatican spokesperson said doctors are confident the cancer was removed but await tests on whether it spread 3. Rappler reported that lymph node status is unknown, and that the Vatican has canceled audiences through October 20, while Peru's president said preparations for the November 6-17 trip to Uruguay, Argentina and Peru continue 134.

Analysis
Pope Leo XIV is unlikely to cancel or postpone any leg of his November 6-17 trip to Uruguay, Argentina and Peru by November 5, 2026. High confidence reflects consistent Vatican and wire reporting of an uncomplicated recovery, and Peru's president publicly continuing preparations. The decisive unknown is lymph node status, since pending pathology could add adjuvant therapy and force a shorter or staged itinerary. A schedule of about 50 events and 14 flights is the tightest constraint, so the Vatican may trim individual events before it drops a country. Day-to-day governance continues under existing structures, and the pope retains full authority while hospitalized.

4 sources