Asian stocks struggle on growth concerns, yen hits Japan stocks

By Saikat Chatterjee HONG KONG (Reuters) - Asian stocks eased on Thursday after surveys showed global manufacturing activity and demand remain weak, while a jump in the yen sent Japan's Nikkei reeling more than 2 percent. MSCI's broadest index of Asia-Pacific shares outside Japan struggled to keep its head above water after rising more than 3 percent over the last seven days. Factory surveys over the past 24 hours highlighted a sluggish global economy, even as the U.S. Federal Reserve appears to