Jersualem ? Israeli Prime Minister Ariel Sharon underwent a CT scan that showed he remained in serious but stable condition Thursday, the hospital said, in the first announcement on the comatose leader’s state since he had a feeding tube inserted in his stomach earlier this month.

The statement from Jerusalem’s Hadassah Hospital said Sharon’s condition had not changed and called the CT scan “routine.”

The CT scans have been used to assess bleeding and swelling in Sharon’s brain since he suffered a massive stroke on Jan. 4 and went into a coma.

According to past hospital statements, there have been no changes in the results of the scan in recent weeks, but Sharon has failed to regain consciousness.