The Vatican has said that Pope Francis, who has been hospitalised and in critical condition with pneumonia in both lungs, was showing a “slight improvement” The Vatican, however, cautioned that doctors would not offer a prognosis.

The 88-year-old Francis has pneumonia in both lungs and remains in critical condition despite showing a slight improvement after 11 days in the hospital.

Pope Francis was found to have pneumonia in both his lungs Tuesday and his condition remains "complex," the Vatican said in a health update on the 88-year-old pontiff who was hospitalized last week. The big picture: The pope was admitted to Rome's Agostino Gemelli Hospital on Friday with bronchitis symptoms and his treatment was changed after doctors found he had a polymicrobial infection of the respiratory tract.