Many conditions: Mesenteric adenitis, crohn's ileitis, meckel's diverticulitis, ovarian cyst rupture, pelvic infections, cecal diverticulitis, foreign body perforation, cholecystitis, kidney stones, urinary tract infections, perforated ulcer, volvulus, cancer. Or just regular gastroenteritis, a stomach ache. That is why you need to see a doctor.
Answered 4/7/2013
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