<prompt> Ogilvie syndrome is?Small bowel obstructionLarge bowel obstructionColonic pseudo-obstructionBowel ischemia  <response>: 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 