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: Radiology
Ogilvie syndrome is? 
Select and explain. 
A. Small bowel obstruction, B. Large bowel obstruction, C. Colonic pseudo-obstruction, D. Bowel ischemia
C: Colonic pseudo-obstruction
Answer: C: Colonic pseudo-obstruction 
Explanation: Ans COgilvie syndromeQ is the acute dilation of the colon in the absence of any mechanical obstruction in severely ill patients. Colonic pseudo-obstruction is characterized by massive dilatation of the cecum (diameter > 10 cm) and right colon on abdominal X-ray. The condition carries the name of the British surgeon Sir William Ogilvie, who first reported it