This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Borchardt's triad of acute epigastric pain, violent retching and inability to pass a nsogastric tube is seen in patients with 
Select and explain. 
A. Acute gastric volvulus, B. Achalasia cardia, C. Jejunogastric intussusception, D. Hitus hernia
A: Acute gastric volvulus
Answer: A: Acute gastric volvulus 
Explanation: A volvulus is a twisting or axial rotation of a portion of bowel about its mesentery.
When complete it forms a closed loop of obstruction with resultant ischaemia secondary to vascular occlusion.