The pull can also cause erosion, then ulceration, and eventually the intestine can perforate, causing infection, Mehta said.Four out of five kids who swallow multiple magnets will need an invasive procedure, such as an endoscopy or surgery, said Mehta, who has heard of kids swallowing magnets and needing massive bowel resections.From 2002 to 2011 magnet-related emergency-room visits among American