Ariel Sharon remains in a critical but stable condition in hospital, with doctors noting that there has been a “slight improvement” in his health.The results of the latest CT scan show that the left-hand side of the Israeli prime minister’s brain is in better condition than the right-hand side. However it is reported that he has what is described as an “abnormality” in his lungs. Sharon, 77, was hospitalised after suffering a massive stroke on Wednesday. Director Shlomo Mor-Yosef said specialists at his Hadassah hospital in Jerusalem will meet on Sunday to decide whether to begin waking Sharon from a medically-induced coma. They will then have the opportinuty to test his vital signs to see what damage he may have sustained. Sharon’s illness comes as Israel prepares for an election which he had been widely tipped to win. Latest polls suggest his Kadima party could still take control. His deputy, Ehud Olmert, is now caretaker leader.