Doctors have removed a mass of impacted hair weighing half a kg from the stomach of a 12-year-old girl in China's Henan province. Doctors at the First Affiliated Hospital of Henan University of Science and Technology in Luoyang Henan province surgically removed the hairball from the stomach of the girl Jan 11 the Global Times reported Monday. The mother of the girl in Luoyang was shocked when doctors revealed the reason why her daughter had been inexplicably losing her long hair and weight over the past year. Doctors said the girl suffers from pica a pathological disorder where a person