The giant hairball discovered in a teenage girl's stomach weighed 500g. Photo / NZ Medical JournalThe giant hairball discovered in a teenage girl’s stomach weighed 500g. Photo / NZ Medical Journal

The X-ray of the teenager who had to have a 500g hairball removed from her stomach. Photo / NZ Medical JournalThe X-ray of the teenager who had to have a 500g hairball removed from her stomach. Photo / NZ Medical Journal