The Vatican has released the first photograph of the pope for more than a month, showing Francis co-celebrating Mass in the hospital chapel.
The photograph is taken from behind, and shows Pope Francis wearing a purple stole sitting in a wheelchair in front of an altar.
The Vatican said he was participating in the celebration of the Mass with other priests. No one else is visible in the photo.
It is the first photograph of the pope since he was taken to hospital on February 14 with a severe case of bronchitis, which developed into double pneumonia.
It is also the first time the Vatican mentions that the pope has participated in celebrating a Mass during the last month.