DR MARC SIEGEL: Pope Leo's lung surgery puts modern medicine alongside faith

When Pope Leo XIV visited Lourdes, France, on Sept. 26, he drank a glass of water from the spring at the Grotto of Massabielle, where St. Bernadette Soubirous reported visions of the Virgin Mary in 1858.

Who knew last month that the pope might be calling on the healing waters to help in his own healing as he faces surgical removal of what the Vatican has described as "a small localized nodule" that he has said "was identified at a very early stage and well situated." 

The surgery will take place Tuesday, Oct.