This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Radiology
A patient presenting with abdominal pain, blood in stools and a palpable mass on examination. A Barium Study was performed, probable diagnosis is? 
Select and explain. 
A. Meckel's Diveiculum, B. Intussusception, C. Volvulus, D. Diveiculitis
B: Intussusception
Answer: B: Intussusception 
Explanation: The above shown image of barium study shows"Coiled spring appearance", which is characterstic of Intussusception. INTUSSUSCEPTION It is a condition in which one segment of intestine telescopes inside of another, causing an intestinal obstruction. It usually presents with nausea, vomiting,pain abdomen with blood in stools. Palpable abdominal mass may be found on physical examination. On Barium: Figure: Coiled spring appearance on Barium study in Intussusception.