Pope Leo said on Sunday that he will undergo surgery this week to remove a small growth on his lung. The 71-year-old pontiff told pilgrims that doctors found the nodule early and it is well-contained. He decided to have the operation after his medical team advised him to intervene.

VATICAN CITY, Oct 11 (Reuters) - Pope Leo said on Sunday that doctors had detected a small growth on his lung ‌during a recent health check and he would be undergoing surgery this week to remove it, in the first health scare of the 71-year-old pontiff's tenure.

Leo told pilgrims in St. Peter's Square for his weekly Sunday prayer that the growth, a small nodule, was "well-contained" and had been spotted ​early.

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The Vatican did not say whether the nodule is believed to be malignant.

"Recently, during some medical examinations, doctors ​found a localized nodule in my lung," said the pontiff. "It was detected at a very early ⁠stage and is well contained."

"The doctors believe it is advisable to intervene, so, following their advice, I have decided to ​undergo surgery to remove it," he said. "The operation is already scheduled for the next few days."

A nodule on the lung is ​a small, localised lesion that can be benign. The American Thoracic Society says fewer than 5% of lung nodules overall prove cancerous, although risk rises with age, size, and other factors such as smoking.

"Lung nodules are fairly common and are often benign," said Stephen Liu, a lung cancer ​expert at Georgetown University in Washington and division chief of hematology-oncology at MedStar Georgetown University Hospital.

"When there is sufficient concern, ​and when it is safe to do so, based on the location of the nodule and the overall health of the patient, surgical ‌removal can ⁠provide a definitive diagnosis," he said.

LEO A RELATIVELY YOUNG POPE, PLAYS SPORTS

Leo, elected pope by the world's cardinals in May 2025, is relatively young for a Church leader. He enjoys sports, including tennis, and is not known to be a smoker or to previously have had health issues.

Italian Prime Minister Giorgia Meloni wished the pope well.

"I would like to express to the Holy ​Father my personal support, and ​that of the Italian government, ⁠as he faces this challenge in the coming days," she said in a statement.

"The serenity and composure with which he spoke about it (today) ...are reassuring," Meloni added.

The late Pope Francis, Leo's predecessor, ​died at age 88. He was hospitalised several times as he grew frail in his ​later years. He ⁠did not usually announce his hospital visits in advance, sometimes sparking a media frenzy over his health.

The Vatican press office said Leo's recovery from surgery was expected to take about a week. It did not immediately provide further details about the pope's health.

Leo keeps ⁠a busy ​schedule and is due to make an 11-day tour of Uruguay, Argentina ​and Peru from November 6-17.

Before mentioning his health issue in his address on Sunday, the pope referred to the trip, thanking Catholics for their prayers "for the ​pastoral visit I will undertake."

Reporting by Joshua McElwee, Francesca Landini and Gavin Jones Editing by Tomasz Janowski, Alexandra Hudson and Susan Fenton