Enterogastric reflux during barium enema examination has been ascribed to various cause including incompetence of the ileocecal valve, shunt, fistula, excessive barium etc. Recently we have encountered a case of complete enterogastroesphageal regurgitation during barium enema examination performed for the reduction of the ileocolic intuosusception during barium enema examination performed for the reduction of the ileocolic intuosusception in a 6-months-old baby boy. The regurgitation occured only in the first of two barium enema examinations conducted at one month interval for recurring intussusception. The barium-saline solution used in the present study was not more than 350ml in quantity. No organic or physical causes of such a complete regurgitation could be determined.