This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal Radiology, Subject name: Radiology
Whirlpool sign is feature of 
Select and explain. 
A. Sigmoid volvulus, B. Midgut volvulus, C. Intussusception, D. Diveiculosis
B: Midgut volvulus
Answer: B: Midgut volvulus 
Explanation: 'Midgut volvulus' is a complication of mal-rotated bowel. It may result in proximal bowel obstruction with resultant ischemia if prompt treatment is not instigated. Radiological Findings on CT include: Whirlpool sign of twisted mesentery Malrotated bowel configuration Inveed SMA/SMV relationship Bowel obstruction Free fluid/free gas in advanced cases