Pope Leo's Lung Cancer Diagnosis Casts Uncertainty on the Future of the Papacy

Serdar HocamAuthor & Editor

Following the removal part of his right lung and a subsequent lung cancer diagnosis, Pope Leo XIV's South American tour in November and the future of his papacy have become uncertain.

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Shape of Pope Leo's Papacy More Uncertain After Cancer Diagnosis

The Vatican announced that Pope Leo XIV, who had part of his right lung surgically removed, has been diagnosed with lung cancer. This development forces 1.4 billion Catholics to confront the reality of a sick pope once again, casting uncertainty over the future course of the papacy and planned travels.

Surgery and Cancer Diagnosis

The Vatican officially announced that 71-year-old Pope Leo XIV was diagnosed with lung cancer following an operation to remove part of his right lung.

Pope Leo had previously announced to pilgrims in St. Peter's Square on Sunday that a local nodule had been found in his lung and that it was detected early.

Future of the Papacy and Expectations

The Pope's illness, which stands in contrast to the energetic nature and lack of health issues that drew attention when he was elected in May 2025, has raised questions about the future of his expectedly dynamic papacy.

Experts note that the medical prognosis depends on factors such as whether the cancer has spread to the lymph nodes.

South American Tour in Jeopardy

It currently remains uncertain whether Pope Leo will be able to carry out his intensive 11-day tour covering Uruguay, Argentina, and Peru scheduled for November 6–17.

There is a possibility that this trip, to which the Pope attaches great importance due to his decade-long missionary background in Peru, could be postponed depending on his recovery process.

Medical Evaluations and Process

According to American Cancer Society data, if the cancer remains confined to the lung, the five-year relative survival rate is 67 percent.

Doctors and experts state that surgical intervention can yield positive results in early-detected cases, but test results must be awaited for the situation to become clear.