Pope Francis' doctors "are prudently maintaining their cautious prognosis" as the pontiff's condition of respiratory and kidney issues "despite its severity has shown a slight improvement" at Gemelli Hospital in Rome.

Pope Francis is in critical condition in a Rome hospital, 10 days after he sought out treatment for bronchitis. The bronchitis has turned into double pneumonia, and the pope is also dealing with early signs of kidney failure and breathing difficulties.

Pope Francis was in critical condition Saturday after he suffered a long asthmatic respiratory crisis that required high flows of oxygen, the Vatican said.

Pope Francis, 88, was resting Monday morning, his 10th day at the hospital for a complex lung infection that led to the early stages of kidney insufficiency.