Pope Leo to undergo surgery after discovery of lung nodule

Key points

• Pope Leo has announced he will undergo surgery this week to remove a small growth found on his lung. Speaking to pilgrims in St Peter's Square during his Sunday prayer, he said the growth was well-contained and spotted early.
• The Vatican has not said whether the nodule is malignant. The Vatican press office said recovery is expected to take about a week.
• The 71-year-old pope is due to begin an 11-day tour of Uruguay, Argentina and Peru on November 6.