Child Dikembe Mutombo Brought to U.S. Required CPR After Cardiac Arrest

The child Dikembe Mutombo flew to the U.S. to remove a massive tumor from his face required CPR after he went into cardiac arrest during surgery ... TMZ has learned.

According to dispatch audio -- obtained by TMZ -- 8-year-old Matadi was administered CPR Sunday at around 6 PM PT as an ambulance arrived to take him from one section of the Cedars-Sinai Medical Center campus -- where he was undergoing surgery -- to an Intensive Care Unit in a nearby building.

At one point, a dispatch operator calls off one ambulance and sends another that's closer.

The surgery was scheduled to last 6 hours and Matadi went into cardiac arrest around the 6-hour mark. We don't know if the operation was completed. We've been trying to get an update for days, to no avail -- no one's talking. We were told, as of Monday night, Matadi was in stable condition and was able to move his hands and feet. Otherwise, everyone's radio silent.