ROME (CNS) -- More than 24 hours after he entered the hospital, Pope Francis' doctors reported a "marked improvement" in his condition, which they attributed to treatment with intravenous antibiotics.The tests the pope underwent after entering Rome's Gemelli hospital with difficulty breathing revealed he had bronchitis, said a medical bulletin released by the Vatican press office March 30. "Based on his expected progress, the Holy Father could be discharged in the coming days."Earlier in the day, the Vatican said the 86-year-old pope "rested well" his first night in the hospital and was "steadily improving" from what it described as a respiratory infection.He spent the morning reading some newspapers, eating breakfast and had "resumed working," the Vatican had said. Before lunch, he went to the chapel near his hospital room to pray, and he received Communion.The evening bulletin said, "Pope Francis spent the afternoon at Gemelli devoting himself to rest, prayer and some work duties....