Pope Francis has shown "slight" improvement over the past 24 hours, but remains in critical condition, the Vatican announced Wednesday.

"The clinical conditions of the Holy Father in the last 24 hours have shown a further, slight improvement. The mild renal failure found in recent days has returned. The chest CT scan, performed last night, showed a normal evolution of the pulmonary phlogistic picture. Today's blood chemistry and blood tests confirmed yesterday's improvement," the Vatican said in a statement.

"The Holy Father continues high-flow oxygen therapy; even today he has not presented respiratory crises. Respiratory physiotherapy continues. Despite registering a slight improvement, the prognosis remains confidential. During the morning, the Holy Father received the Eucharist. The afternoon was dedicated to work activities," the statement continued.

<i>This is a developing story. Check back soon for updates.</i>

<div class="author-bio"><p>Anders Hagstrom is a reporter with Fox News Digital covering national politics and major breaking news events. Send tips to Anders.Hagstrom@Fox.com, or on Twitter: @Hagstrom_Anders.</p></div>

The Vatican unveiled the results of Pope Francis' CT scan on Wednesday.{ai:summary}<p>Pope Francis has shown slight improvement but remains in critical condition, according to the Vatican. His renal failure has returned to mild levels, and a recent chest CT scan showed normal pulmonary conditions. He continues to receive high-flow oxygen therapy and respiratory physiotherapy.</p><p>Despite the positive updates, the prognosis remains confidential. The Pope received the Eucharist in the morning and dedicated the afternoon to work activities. This is a developing story. #health</p>

Pope Francis continues to improve, but 'mild renal failure' returns: Vatican

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