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An 80-Year-Old Man With a 24-Hour History of Epigastric Pain. CASE PRESENTATION: An 80-year-old man was admitted to our hospital with 24 hours of epigastric pain. The pain was described as sharp, episodic, nonradiating, and without an identifiable provoking factor. Associated symptoms included nausea and nonbloody vomiting. He denied dyspnea, angina, fevers, chills, dysphagia, diarrhea, melena, or hematochezia. He had taken less than 2 g of acetaminophen earlier in the day without symptomatic relief. He had a 30-pack-year smoking history but quit over 25 years ago. He did not drink alcohol or use illicit drugs. He had a medical history of end-stage renal disease, for which he had undergone hemodialysis; hypertension; metastatic prostate cancer, for which he had received androgen deprivation therapy; and abdominal aortic aneurysm. His surgical history included a remote endovascular repair of the abdominal aortic aneurysm. His medications included amlodipine, losartan, carvedilol, sevelamer, and leuprolide.