text: A gastrointestinal or GI series is an X-ray exam of the small intestine subsequent to barium ingestion. On upper GI series, the<unk> 's<unk>  appears as a smooth, white, globular mass located 50 cm proximal to the ileocecal valve and arising from the antimesenteric border of the ileum.
option_0: Meckel's diverticulum x ray
option_1: Meckel's diverticulum MRI
option_2: Meckel's diverticulum CT
option_3: Meckel's diverticulum physical examination
option_4: Intussusception x ray
option_5: Intussusception CT
option_6: Meckel's diverticulum ultrasound
option_7: Bowel obstruction X-ray