The Vatican says Pope Francis slept peacefully and ate breakfast after developing pneumonia in both his lungs

Pope Francis has pneumonia in both lungs and is facing a “complex” clinical picture, the Vatican said Tuesday. The Pope is in “good spirits” and asking for continued prayers.

A follow-up chest CT scan on Tuesday "demonstrated the onset of bilateral pneumonia, which required additional drug therapy," the Vatican said.

A follow-up chest CT scan "demonstrated the onset of bilateral pneumonia."

ABC News’ James Longman reports on the latest from Vatican City where Pope Francis spent a fourth night in the hospital.

ABC News chief medical correspondent Dr. Tara Narula explains what we know about the pontiff's current condition and treatment.

The Vatican says Pope Francis’ respiratory tract infection is presenting a “complex clinical picture” that will require further hospitalization

The pontiff showed "some" improvement in his lab tests, the Vatican said on Sunday, but he remains hospitalized with a respiratory tract infection.

A look back at when Cardinal Jorge Mario Bergoglio became Pope Francis on March 13, 2013.

As Pope Francis continued to show "some" improvement in his lab tests, the pontiff remained hospitalized with a respiratory tract infection on Sunday, the Vatican said.

The Vatican says the pope no longer has a fever and test results show improvements. 

The 88-year-old pontiff spent the night at a Rome hospital. The Vatican says he is being treated for bronchitis.

Pope Francis is being admitted to hospital on Friday for “necessary tests” and to continue his ongoing bronchitis treatment, the Vatican said.

The 88-year-old pontiff is in "fair" condition, the Vatican said, undergoing "necessary tests" and treatment for bronchitis. Francis has been battling the infection for over a week.

The pope was admitted to the hospital to receive treatment for bronchitis.

The Vatican announced that the Pope has been admitted to the hospital for “necessary tests” and to continue his treatment for bronchitis.

Pope Francis has accepted the resignation of an influential Peruvian bishop, who has come under criticism for not doing enough to stop abuses committed by a conservative Catholic movement that was recently disbanded by the Vatican

Pope Francis has issued a major rebuke to the Trump administration’s mass deportation of migrants

The Vatican's charity is voicing outrage at what it calls the “reckless” and “unhuman” U.S. plans to gut USAID

The pontiff fell at his residence on Thursday, according to Vatican officials.

The pontiff fell at his residence in the Vatican on Thursday, officials said in a statement.

President Joe Biden awarded Pope Francis with a Presidential Medal of Freedom with distinction during a phone call on Saturday, according to the White House.

The pope is poised to deliver the annual Christmas Day message from Vatican City.

The Vatican announced that the pope is suffering from what it calls “mild flu-like symptoms” just days before a planned trip to Belgium and Luxembourg.

ABC News’ Ines de La Cuetara joined the Pope on his 12-day four-continent trip, the longest of his papacy, at 87 years old.

Pope Francis held mass in Port Moresby, Papua New Guinea, to a packed stadium of about 35,000.

As he continues to promote religious harmony, Pope Francis visited Jakarta's Istiqlal Mosque, the largest mosque in Southeast Asia, on Thursday.

The pope announced he would "start an apostolic trip to Asia" this week, with visits planned to Indonesia, Papua New Guinea, Timor-Leste and Singapore.

Pope Francis on Monday began a 12-day, four-country, two-continent odyssey; with stops in Indonesia, Papua New Guinea, Timor-Leste and Singapore.

Pope Francis has challenged leaders of the world's wealthy democracies to prioritize human dignity in developing and using artificial intelligence.

Pope Francis hosted a very different audience at the Vatican on Friday, celebrating the importance of humor.

Pope Francis warned world leaders in Italy about the potential dangers of artificial intelligence as well as the war in Ukraine.

Pope Francis expected to meet President Joe Biden and summit leaders to discuss AI, as well as the war in Ukraine.

Pope Francis is apologizing after reports that he used an offensive term for gay men in a closed-door conversation about gays and the priesthood.

Italian media sourced the use of the term to unidentified bishops who reportedly overheard Pope Francis' speech at the Italian bishops’ conference from the hallway.

Garth Brooks opened up about performing at the Vatican over the weekend as part of the World Meeting on Human Fraternity.

The 87-year-old Pontiff traveled to Venice for a popular arts festival that featured a Vatican exhibition at a women's prison.

The Vatican's doctrine office issued the "Infinite Dignity," which was approved by Pope Francis, and declares sex change operations and surrogacy on par with abortion and euthanasia.

Francis, 87, had skipped a Good Friday ceremony so that he'd be able to attend the Sunday Mass, the Vatican press office said in a statement on Friday.

Pope Francis made an appearance in St. Peter's Square Easter Sunday to more than 60,000 followers.

Pope Francis presided over an Easter Sunday Mass in St. Peter’s Square and later used his blessings to invoke prayers for victims of war, calling for an end to ongoing conflicts.

87-year-old pontiff skipped a Good Friday procession to preserve his health ahead of Easter Sunday. He has had health issues in recent months and now needs a wheelchair or a cane to move around.

Despite cold and flu symptoms and mobility issues, the pope is determined to carry out a full schedule during Easter weekend, the most important time of year for Christians.

During his weekly appearance at the Vatican earlier in the day, Pope Francis said he "still had a bit of a cold."

Pope Francis gave a general audience at the Vatican on Wednesday.

The Vatican confirmed that the pope was hospitalized for about 90 minutes for diagnostic tests but has not given any further details.

Pope Francis delivered his traditional Christmas Eve mass in Vatican City.

ABC News papal contributor Father James Martin discusses the latest after Pope Francis approved blessings for same-sex couples.

The Rev. James Martin spoke with "Start Here" following Pope Francis' change on allowing priests to bless same-sex couples who request it.

Pope Francis has formally signed off on allowing Catholic priests to bless same-sex couples -- a radical change in Vatican policy.