Question: A 57-year-old man presented to our hospital with a week of generalized weakness and abdominal pain. Relevant medications included diclofenac 75 mg twice daily, aspirin 81 mg, and clopidogrel 75 mg/d. Vital signs were normal. Physical examination showed mild diffuse abdominal tenderness. Admission blood work revealed a hemoglobin of 8.8 g/dL, decreased from a baseline hemoglobin of 12 g/dL. The patient did not have overt gastrointestinal bleeding, but tested positive for fecal occult blood.