Pope Francis marked the 12th anniversary of his papacy Thursday with increasingly positive medical updates four weeks into his hospitalisation for double pneumonia. The pope spent another tranquil night, the Vatican said in its brief morning statement. A chest X-ray confirmed improvements, the Vatican said on Wednesday, just two days after days after doctors declared he's no longer in imminent danger of death. The latest medical bulletin said that the 88-year-old pope's condition remained stable, but indicated a complex picture considering his overall fragility. The Holy See hasn't said how the anniversary of his election as the 266th pope might be commemorated. It is a public holiday at the Vatican and Masses are planned in his honor at churches in Rome. No medical bulletins will be issued. Francis on Wednesday remotely followed a Lenten spiritual retreat that has been a mainstay of his papacy. He continues to receive high flows of oxygen through nasal tubes during the day and a .