A 62-year-old man presents to the emergency department with significant bright red rectal bleeding for the past 6 hrs. He has no abdominal pain and has not vomited. He is a heavy smoker. PMH : Mild hypertension (takes Bendroflumethiazide 2.5 mg once daily) Examination He looks pale and sweaty, but the temperature is normal. BP : 94/60 mmHg PR : 118/min.
Hb : 7.4 g/dL WCC : 13.6 × 10 9 /L Platelets : 404 × 10 9 /L Sodium: 134 mmol/L Potassium: 4.8 mmol/L Urea: 8.6 mmol/L Creatinine: 115 μmol/L International normalized ratio (INR): 1.2 IU His abdomen is soft with no evidence of distension. Rectal examination reveals altered blood mixed with the stool and there are some blood clots on the glove. Rigid sigmoidoscopy is unsuccessful due to the presence of blood and feces. What differential diagnosis do you suggest for this case? *This case is from Docplexus editorial team for educative…
