Asian shares, oil skid as growth concerns dominate

By Hideyuki Sano TOKYO (Reuters) - Asian shares look set to retreat and oil prices to resume their descent after investors used rebounds over the last two days to offload risk assets as fears of a global economic slowdown show no sign of abating. Japan's Nikkei fell 2.2 percent while South Korean shares dropped 0.6 percent . MSCI's broadest index of Asia-Pacific shares outside Japan fell 0.3 percent after two days of gains.