Pope Leo XIV is preparing to undergo surgery to remove a localised nodule in his lung, which was detected at a very early stage.
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which → prepare → stage
The procedure is the first reported medical event of his 17-month papacy.
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procedure → report → papacy
The 71-year-old pontiff is otherwise considered healthy and physically fit.
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pontiff → consider → ?
Here is a look at what is known about the lung nodule, his planned treatment, the possible impact on his engagements and the question of papal authority during a medical emergency.
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what → know → emergency
A lung nodule is a small abnormal spot in the lung measuring less than 3 centimetres (approximately 1.2 inches) in diameter.
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nodule → measure → diameter
According to the american cancer society, such nodules are sometimes discovered during CT scans carried out to investigate other conditions, including injuries or lung infections.
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nodules → accord → injuries
Lung nodules may be benign or malignant, making timely medical assessment important to establish their nature.
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assessment → make → nature
Dr Stephen Liu, a lung cancer specialist at Georgetown's Lombardi comprehensive cancer center, said the prognosis is “excellent” when a cancerous nodule is detected and removed at an early stage.
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nodule → say → stage
In some cases, surgery alone may be enough to treat the condition.
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surgery → treat → condition
Leo said the nodule was identified during “recent medical tests”.
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nodule → say → tests
The Vatican said on Monday that the check-up was “routine” and had not been prompted by any specific health concern.
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up → say → concern
Surgery planned, followed by a week of recovery
The Vatican announced that Leo would undergo the procedure during the first days of the week.
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Leo → plan → week
He is expected to remain in hospital for around a week to recover.
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He → expect → week
The pope will receive treatment at Rome's Gemelli Hospital, officially known as the Agostino Gemelli Polyclinic.
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pope → receive → Polyclinic
The private, non-profit catholic teaching hospital has a dedicated apartment for pontiffs on its 10th floor, which includes a private chapel.
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which → have → chapel
Leo's predecessor, Pope Francis, was treated at the same hospital before his death in May 2025 following a prolonged illness that included a respiratory crisis.
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that → treat → crisis
St John Paul II also spent considerable time at Gemelli and famously referred to it as “Vatican III”, alongside the Vatican itself and the papal summer residence at Castel Gandolfo.
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II → spend → Gandolfo
Will the procedure affect Leo's schedule and foreign trip?
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procedure → affect → schedule
The pope has several engagements lined up for the week, including his regular meetings and a public mass scheduled for Wednesday.
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pope → have → Wednesday
The mass is due to mark the end of a weeklong conference on family ministry, but Vatican officials indicated on Sunday that Leo might not attend.
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Leo → mark → Sunday
His planned overseas visit from November 6 to 17 to Uruguay, Argentina and Peru could also be affected by the operation and recovery period.
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visit → plan → period
The itinerary involves 12 flights, two helicopter journeys and considerable changes in altitude during the Peru leg.
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itinerary → involve → leg
It remains uncertain whether the medical procedure will require any changes to the schedule.
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procedure → remain → schedule
According to the Leo, he is still intended to undertake the trip, stated during the Sunday.
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he → accord → Sunday
Does the pope retain authority while unconscious?
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pope → retain → authority
The Vatican has no specific rules determining, who assumes a pope's powers if he becomes completely incapacitated.
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he → have → powers
As a result, Leo would remain pope and retain his authority even while unconscious during surgery.
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Leo → remain → surgery
Previous pontiffs continued to exercise their responsibilities during extended hospital stays.
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pontiffs → continue → stays
Pope Francis and St John Paul II made appointments and issued laws and statements while undergoing treatment.
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Francis → make → treatment
The Vatican's day-to-day affairs are already managed by a team of officials, but the absence of a formal framework for a pope, who becomes unable to govern has attracted increasing attention.
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who → manage → attention
Advances in medical treatment and longer life expectancies have intensified calls for the church to establish clearer arrangements for a pontiff who becomes seriously ill or incapacitated for an extended period.
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who → intensify → period
Cardinal Tagle appointed dean ahead of surgery
Two days before announcing his planned operation, Leo approved an important appointment within the church's leadership.
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Leo → appoint → leadership
On Friday, he named Filipino Cardinal Luis Antonio Tagle, 69, as the new dean of the College of Cardinals.
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he → name → Cardinals
Tagle succeeds Cardinal Giovanni Battista Re, 92, whose term had been extended by Pope Francis in the weeks leading up to his death.
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term → succeed → death
The dean plays a key role during the transition between popes.
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dean → play → popes
The position involves presiding over the previous pontiff's funeral and helping lead closed-door meetings of cardinals ahead of the conclave, where they discuss the church's priorities and future direction.
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they → involve → priorities
If the dean is younger than 80, when the conclave begins, he also presides over the secret election of the next pope in the Sistine Chapel.
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he → begin → Chapel
The Aporia
