Quds city, Jan 6, SPA -- Ariel Sharon underwent emergency surgery Friday after a brain scan revealed a rise in intracranial pressure and further bleeding in his brain, and outside experts said the prime minister's prognosis was not good. Sharon's blood pressure also rose and one of his brain lobes expanded slightly, said Dr. Shlomo Mor-Yosef, the director of Hadassah Hospital, where Sharon is being treated. Sharon's aides, who had rushed to the hospital to be with him during his second surgery in two days, grimly huddled outside, according to a report of the Associated Press. "It was decided to bring the prime minister to the operating room in order to deal with these two issues, to drain the bleeding and to decrease the intracranial pressure," Mor-Yosef said.