The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 26-year-old man presents to the office complaining of persistent epigastric pain for the past 2 months. He states that his pain is worse a few hours after he eats. His father had similar symptoms. Past medical history is insignificant. He is a non-smoker and does not drink alcohol. The vital signs include blood pressure 120/90 mm Hg, heart rate 83/min, and temperature 37.0°C (98.6°F). Physical examination is insignificant except for mild epigastric tenderness. A metabolic panel reveals the following: Serum sodium 136 mEq/L Serum potassium 4.2 mEq/L Calcium 13.2 mg/dL Bicarbonate 26 mEq/L Upper gastrointestinal endoscopy reveals multiple duodenal ulcers. Which of the following is the most likely diagnosis?   (A) Gastroesophageal reflux disease   (B) Gastric adenocarcinoma, intestinal type   (C) VIPoma   (D) MEN1
['(D) MEN1 <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Gastroesophageal reflux disease \n (B) Gastric adenocarcinoma, intestinal type \n (C) VIPoma \n (D) MEN1 <> possible answers', '  A 26-year-old man presents to the office complaining of persistent epigastric pain for the past 2 months. He states that his pain is worse a few hours after he eats. His father had similar symptoms. Past medical history is insignificant. He is a non-smoker and does not drink alcohol. The vital signs include blood pressure 120/90 mm Hg, heart rate 83/min, and temperature 37.0°C (98.6°F). Physical examination is insignificant except for mild epigastric tenderness. A metabolic panel reveals the following:\nSerum sodium 136 mEq/L\nSerum potassium 4.2 mEq/L\nCalcium 13.2 mg/dL\nBicarbonate 26 mEq/L\nUpper gastrointestinal endoscopy reveals multiple duodenal ulcers. Which of the following is the most likely diagnosis? <> context@']