A 61 year old man presented to the emergency department (ED) with constipation and vomiting for ten days. His blood pressure was 126/82 mmHg and pulse 82/min, while the oxygen saturation and fever was 98.0% and 36.7 C, respectively. Hepatitis B carrier, diabetes, hypertension, and hospitalization due to a mesenteric panniculitis in last month were positive in his past medical history. Abdominal distention and diffuse tenderness were noted. The White blood cell count was 9.6 Â 10 3 /mL, while hemoglobin, creatinine, urea, AST, ALT, total bilirubin, pH, and HCO 3 were 12.8 g/ dL, 2.92 mg/dL, 29.9 mg/dL, 22 U/L, 17 U/L, 0.51 mg/dL, 7.30, and 19 mmol/s, respectively. Contrast-enhanced abdominal computed tomography (CT) was performed to elucidate the etiology of abdominal pain (Fig. 1AeB).