A 30-year-old man presents with mild epigastric pain for around a month, which worsens following meals, and is associated with post-prandial nausea.
Close questioning reveals the passage of black, tarry, foul-smelling stools twice in a single day, around 3 days ago. His bowel habits are unchanged from earlier, and there is no history of recent trauma or bleeding disorders.
His medical, surgical, and family histories are unremarkable. He does not smoke, but has been consuming an estimated 3 to 5 units of alcohol each week for over a decade now.