Pittsburgh Mayor Bob O'Connor's doctors are set to detail his treatment at a press conference tomorrow morning to explain his longer-than-hoped stay at UPMC Shadyside Hospital and a delay in administration of a second anti-cancer drug.

The mayor was expected to start on Temodar, a chemotherapy pill, today, which was to be used in an experimental combination with the methotrexate he got a week ago. That did not occur, according to a statement issued by the University of Pittsburgh Medical Center, which also reported that doctors are reducing his intake of medication and monitoring his response.

Mayoral spokesman Dick Skrinjar said the doctors still plan to use Temodar eventually. He said doctors would provide specifics tomorrow, including information on whether the mayor is still expected to get a second methotrexate dose next week, as had been planned.

Mr. Skrinjar said the mayor has ordered that staff keep track of all cards, letters and gifts he receives, so thank-you cards can be sent. He said the mayor did not sign a city contract with the Pittsburgh Downtown Partnership allowing wireless Internet antennae Downtown, as was planned, because staff did not take it to him, but that the signing might occur tomorrow.