This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Which of the following radiographic presentation cannot be seen in a patient with intussusception? 
Select and explain. 
A. Target sign, B. Corkscrew sign, C. Crescent sign, D. Normal radiograph
B: Corkscrew sign
Answer: B: Corkscrew sign 
Explanation: Radiographic signs of Intussusception: 1. Target sign 2. Crescent sign 3. Absent liver edge sign (also called the absence of the subhepatic angle) 4. Bowel obstruction 5. May have a normal x-ray The corkscrew sign describes the spiral appearance of the distal duodenum and proximal jejunum seen in midgut volvulus. It has been identified as a diagnostic indicator of midgut volvulus. Ref: Oiz-neira CL. The corkscrew sign: midgut volvulus. Radiology. 2007;242 (1): 315-6.