Borchardt's triad of acute epigastric pain, violent retching and inability to pass a nsogastric tube is seen in patients with
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.
Acute gastric volvulus
Achalasia cardia
Jejunogastric intussusception
Hitus hernia