A 3-year-old male presents to clinic with his mother who is saying that over the course of the day her son has not been acting like himself. He has been vomiting and has had currant-jelly-like bloody stools. He has also been very lethargic. Upon assessment, you find a RUQ mass. What diagnosis do you suspect? What treatment protocol does he need and what will you include in your plan of care? Support your answer with a minimum of two APRN-approved scholarly resources.