A 75.year old woman with chronic atrial fibrillation presented to the hospital with a 2-day of colicky abdominal pain. The physical examination revealed hypoactive bowel sounds and diffuse abdominal tenderness. Laboratory tests showed a white cell count of 19,400 per cubic millimeter with 92% neutrophils, a blood urea nitrogen level of 42 mg per deciliter (15 gmol per liter) and a serum creatinine level of 3.0 mg per deciliter (267 gmol per liter). The investigation of choice would be
Abdominal ultrasound is a valuable investigation in patients with suspected biliary pathology and in evaluating abdominal masses. Patients with localised abdominal pain and tenderness are more likely to have a positive finding on ultrasound examination than are those with diffuse abdominal pain and tenderness Ref Davidson 23rd edition pg 677
Contrast enhanced CT abdomen
Duplex Doppler of the abdomen
MRI scan of the abdomen
USG of abdomen
Miscellaneous