The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 42-year-old woman comes to the emergency department because of a 2-day history of right upper abdominal pain and nausea. She is 163 cm (5 ft 4 in) tall and weighs 91 kg (200 lb); her BMI is 34 kg/m2. Her temperature is 38.5°C (101.3°F). Physical examination shows a distended abdomen and right upper quadrant tenderness with normal bowel sounds. Laboratory studies show: Leukocyte count 14,000/mm3 Serum Total bilirubin 1.1 mg/dL AST 32 U/L ALT 40 U/L Alkaline phosphatase 68 U/L Abdominal ultrasonography is performed, but the results are inconclusive. Cholescintigraphy shows the intrahepatic bile ducts, hepatic ducts, common bile duct, and proximal small bowel. Which of the following is the most likely cause of this patient's symptoms?"   (A) Autodigestion of pancreatic parenchyma   (B) Fistula between the gallbladder and small intestine   (C) Infection with a hepatotropic virus   (D) Obstruction of the cystic duct
['(D) Obstruction of the cystic duct <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Autodigestion of pancreatic parenchyma \n (B) Fistula between the gallbladder and small intestine \n (C) Infection with a hepatotropic virus \n (D) Obstruction of the cystic duct <> possible answers', '  A 42-year-old woman comes to the emergency department because of a 2-day history of right upper abdominal pain and nausea. She is 163 cm (5 ft 4 in) tall and weighs 91 kg (200 lb); her BMI is 34 kg/m2. Her temperature is 38.5°C (101.3°F). Physical examination shows a distended abdomen and right upper quadrant tenderness with normal bowel sounds. Laboratory studies show:\nLeukocyte count 14,000/mm3\nSerum\nTotal bilirubin 1.1 mg/dL\nAST 32 U/L\nALT 40 U/L\nAlkaline phosphatase 68 U/L\nAbdominal ultrasonography is performed, but the results are inconclusive. Cholescintigraphy shows the intrahepatic bile ducts, hepatic ducts, common bile duct, and proximal small bowel. Which of the following is the most likely cause of this patient\'s symptoms?" <> context@']