Câu 42: USMLE: United States Medical Licensing Examination

A 47-year-old woman comes to the emergency department because of a 2-week history of intermittent abdominal pain, nausea, and vomiting. She has had similar episodes sporadically during the past 4 years. Physical examination shows dehydration, jaundice, and upper abdominal distention. Laboratory studies show hyperbilirubinemia. A CT scan and upper gastrointestinal series of the abdomen with oral contrast are shown; the arrows indicate the abnormality. Which of the following is the most likely cause of these findings?

1. A. Annular pancreas — đáp án hiện tại
2. B. Cirrhosis of the liver
3. C. Duodenal constriction by the portal vein
4. D. Duodenal constriction by the superior mesenteric artery
5. E. Pyloric stenosis