Question: A 73-year-old woman experienced 2 episodes of hematochezia 2 weeks before her admission. She had been treated for mild hypertension, and had a history of cholecystectomy, appendectomy, 2 C-sections, and unspecified pancreatic surgery 17 years prior. At presentation, her laboratory examinations showed a mild anemia (hemoglobin, 10.7 g/dL; hematocrit, 33.5%) and a slight increase of alkaline phosphatase (169 U/L; normal range, 45-129). She underwent colonoscopy at an outside hospital, which demonstrated an ulcerated partially obstructing large mass in the right colon.