The cardinal's condition has been stable for the last four to six weeks, but he is still weak, said Joseph Zwilling, a spokesman for the archdiocese.
In the meantime, he said, doctors are monitoring the cardinal's condition, seeking to determine the causes of the new weakness and assessing "what they might need to do, if anything".
Suddenly, Cardinal O'Connor's condition deteriorated, and it became clear that his death was imminent.
Until 2005, the cardinals endured Spartan conditions in makeshift "cells" close to the Sistine Chapel.
In an attempt to rouse him from this condition, Cardinal Francesco Maria often summoned Gian Gastone to festivities at his villa, Lappeggi.
After visiting the H-blocks, the Catholic archbishop Cardinal Tomás Ó Fiaich compared the conditions to "the sewer pipes in the slums of Calcutta".
Here we present evidence for the first time that a short term nutritional intervention can significantly improve a cardinal feature of the condition: namely, villous height and the absorptive surface area of the small intestine.
His counsel, Alan Myers QC, argued against releasing the medical reports in full: "All it would do is provoke some sort of debate in the press about the medical condition of Cardinal Pell.
On Saturday, the Vatican Secretariat of State issued a statement strongly rebuking recent reports in the Italian news media, calling them a dangerous attempt to try to condition the cardinal electors.
Pell's lawyer, Allan Myers, urged the commission to keep the majority of the medical report private, saying disclosing it would "lead to debate in the press of the medical condition of Cardinal Pell, and there is no public interest in that".
