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You are seeing a 15yo girl with a strong family history of nephrolithiasis who presents with colicky right flank pain, non-bloody non-bilious vomiting twice, and microscopic hematuria. Her UA results do not support a diagnosis of UTI or pyelonephritis. She is not sexually active. She was seen in the ED 6 months prior for RLQ abdominal pain and underwent a CT scan which was negative for appendicitis or any other pathology. She describes the current pain as different from the pain she had 6 months ago. After IV fluids, ketorolac, and morphine therapy her pain is improved.

What is the most appropriate imaging approach for this patient?
7 votes