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Abdominal pain in an adolescent boy
  1. Sinead Carlson,
  2. Simon Hew
  1. Department of Gastroenterology, Monash Medical Centre Clayton, Clayton, Victoria, Australia
  1. Correspondence to Dr Sinead Carlson, Monash Medical Centre Clayton, Clayton, Victoria 3168, Australia; sinead.carlson{at}

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A 16-year-old boy presented to our department with a 2-day history of abdominal pain and vomiting. The patient had a history of attention-deficit hyperactivity disorder on methylphenidate. He did not drink alcohol and was a non-smoker. Investigations revealed an alanine transaminase of 237 U/L (reference range: 5–40 U/L), gamma-glutamyl transferase of 212 U/L (5–50 U/L), bilirubin of 4 μmol/L (0–20 μmol/L) and a lipase of 3531 U/L (10–60 U/L). An abdominal ultrasound showed no cholelithiasis but a cystic duodenal lesion. Magnetic resonance cholangiopancreatography (MRCP) was performed to help characterise the lesion (figure 1). The patient underwent duodenoscopy …

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  • Contributors SC: wrote the paper. SH: edited the paper.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.