Pope Francis remains stable in hospital and a recent chest scan confirmed improvements in his condition, the Vatican said on Wednesday, in a further sign of progress as the 88-year-old pontiff battles double pneumonia.

The Vatican says a chest scan has confirmed improvements in Pope Francis’ condition in his fourth week in the hospital for treatment of double pneumonia

The pope rested peacefully overnight as he began his 27th consecutive day in the hospital Wednesday morning, the Vatican said.