Concerns over Pope Francis' health have mounted in recent years as have questions about his succession. Here's what we know.
Pope Francis remains in critical condition but is stable and returned to work Tuesday evening, the Vatican announced.
Is Pope Francis going to live? Is he going to die? Will he remain as pope? Dr. Marc Siegel, Fox News senior medical analyst, shares his expert insights on the pope's condition and prognosis.
The pontiff's condition is touch-and-go, given his age, fragility and pre-existing lung disease, according to doctors.
The chaplain of the Agostino Gemelli Hospital, where Pope Francis remains hospitalized, has called for faith and prayer, urging Catholics to embrace "hope against all hope" as concerns over the pontiff's health persist.