A 14-year-old female presented to the emergency department (ED) with persistent left upper quadrant (LUQ) pain. She was last seen in the ED one week prior for similar symptoms. Initially, she was diagnosed with a urinary tract infection (UTI), treated with IV ceftriaxone, and discharged home on a course of cefdinir. On re-presentation, she complained of persistent LUQ pain, fevers with a Tmax of 103 F, and one episode of emesis overnight. Physical examination revealed abdominal tenderness in the LUQ, without ipsilateral CVA tenderness…

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